E-commerce: the store is rarely the broken part

What breaks is the joins. Stock that disagrees with the site, orders that reach the warehouse without the customer record, support agents who cannot see the order they are being asked about. That is the work we do for online retailers.

What that means in practice

  1. 01

    Integrations between store, stock and ledger

  2. 02

    A help desk, such as Zendesk, that sees the order

  3. 03

    The site itself, built and maintained

  4. 04

    Campaign and analytics plumbing

  5. 05

    One agreed source of truth per record

  6. 06

    Senior developers added to your team

Diagram: One source of truth per recordStoreStock and paymentsLedger and help deskWHAT WE DOOne source of truth per recordOrders flow after checkoutPayments reconciledTickets that see the orderWHAT YOU ALREADY OWNWHAT IT BECOMESDiagram: One source of truth per record, stacked for phonesStoreStock and paymentsLedger and help deskWHAT WE DOOne source of truth per recordOrders flow after checkoutPayments reconciledTickets that see the order
A diagram of the work: the store and the systems behind it, joined by one source of truth per record.
  • Phantom Arcades, Search Console

    +92% clicks

    Clicks / non-brand clicks

    Read the case study
  • 5.0 from 6 Google reviews

    Our Google Business Profile.

  • Four of us, Malvern PA

    The people you talk to are the people who do the work.

Our Google reviews

What our Google Business Profile showed when a person at OneAlgorithm read it.

BusinessOneAlgorithm Consulting, Chester County
Rating5.0
Reviews6
ReadOctober 31, 2026

Ecommerce website development we do

We build WooCommerce and custom stores, and join them to the stock, payment and accounting systems behind them.

Why it matters: The store is rarely the broken part; what breaks is the joins to stock, payments and support.

Go deeper: what an ecommerce build covers

Stock that disagrees with the site, orders that reach the warehouse without the customer record, support agents who cannot see the order. That is the work: the store first, then the joins that keep one order looking like one order everywhere.

A developer can also join your team for a peak season or a replatform. See custom software development and website development.

  1. 01

    Storefront builds on WooCommerce or custom

  2. 02

    Joins to stock, payments and the ledger

  3. 03

    Code, hosting and accounts in your name

Which two numbers never match?

Stock against the warehouse, or orders against the ledger. Tell us.

Stores we have built

Phantom Arcades runs on WooCommerce with a configurator; Atlas Peptides is a client site we built.

Why it matters: Both are client sites we built, and one has a measured result we can print.

Go deeper: the Phantom Arcades and Atlas builds

For Phantom Arcades we built the WooCommerce store and its arcade configurator. In Google Search Console, clicks rose 92 percent year on year and non-brand clicks 231 percent. The result is clicks, not sales; we report no revenue.

Atlas Peptides is a client site we built. We make no further claim about it here.

  • 01

    Phantom Arcades: WooCommerce store and configurator

  • 02

    Atlas Peptides: a client site we built

  • 03

    Phantom Google clicks up 92% year on year

Work we can show

Two stores we built. One has a measured search result, and we print no revenue.

An arcade manufacturer in Florida

WooCommerce store and 3D product configurator.

Google clicks +92%, non-brand +231% (Search Console)

Read the SEO case study

Atlas Peptides

A client site we built. We make no further claim about it here.

  1. 01

    WooCommerce: faster, familiar, plugin-led

  2. 02

    Custom: when rules or options interact

  3. 03

    A replatform, when that is the honest answer

WooCommerce or a custom build?

WooCommerce suits most catalogues; a custom build suits unusual checkout or configuration rules.

Why it matters: We have built no Shopify store and hold no Shopify partnership, so we compare only what we build.

Go deeper: how we choose between them

The choice depends on the catalogue, the checkout rules and who will maintain the store. A product configurator with interacting options leans custom; a plain catalogue leans WooCommerce. If a hosted platform fits better, we will say so.

Joins to stock, payments and the ledger

The fix is deciding which system is the source of truth, then making the others read from it.

Why it matters: A mistake in ecommerce is visible to a customer within the hour.

  • Stock and inventory: one count everywhere
  • Payments: the processor holds card data
  • Accounting: orders reconciled to the ledger
Go deeper: how an order flows through your systems

We trace an order from checkout through payment, stock, fulfilment and the ledger, and mark where the record changes shape. Each break gets an owner and a rule for which system wins. PCI scope stays with your payment processor.

A help desk that sees the order: we are a Zendesk partner (agreement signed 2026), so a help desk can be connected to the order. We claim no Zendesk delivery. See Zendesk implementation.

What ecommerce website development costs

Cost follows five drivers, and we name no figure until we have seen your catalogue.

Why it matters: Scope is set in writing before any work starts.

Go deeper: what moves the cost and the timeline

Catalogue size, integrations, payment rules, migration from another platform and support are what move both cost and timeline. We plan the schedule after discovery, because content often arrives slower than code.

  1. 01

    Catalogue size and product options

  2. 02

    Integrations, payments and migration

  3. 03

    Content, support and maintenance

Where our ecommerce experience stops

We have not built a Shopify store and hold no Shopify, BigCommerce or Adobe Commerce partnership.

Why it matters: We work on WooCommerce and custom builds, and on the systems around the store.

Go deeper: platforms we do and do not work on

A page that implied a partnership would be easy to check. Sometimes a replatform is the right answer, and we will say so. The team that would build it is introduced on the about page.

Planning a store or a replatform?

Tell us the catalogue and the systems; we say how we would approach it.

How the work runs

Four stages, and the same people in each.

Four stages: map, agree, build, support, stacked for phones01Mapwhat talks to what02Agreewho owns each record03Buildsync, report, test04Supporthypercare, then 24/7Four stages: map, agree, build, supportA rail runs through four stations: map what talks to what, agree who owns each record, build and test the sync and the report, then support it.01Mapwhat talks to what02Agreewho owns each record03Buildsync, report, test04Supporthypercare, then 24/7
Map the systems, agree who owns each record, build and test it, then stay on: hypercare first, then 24/7 support.

Ecommerce by the numbers

Online sales reached 17.1 percent of US retail in the second quarter of 2026.

$340.2billion: US retail ecommerce, Q2 2026 (seasonally adjusted)
17.1%Share of total retail sales
+12.2%Change from Q2 2025
54,707Online-only retail establishments (NAICS 4541), 2023

U.S. Census Bureau, read 31 October 2026

The 54,707 count covers only retailers classed as online-only; most online sales come from stores classed elsewhere. The Census page carries a 28 September 2026 revision notice; the Q3 release is due 19 November 2026.

Ecommerce questions buyers ask

Do you build Shopify stores?

No. We have not built a Shopify store and are not a Shopify partner. We build on WooCommerce and custom code, and we integrate the systems around the store. If Shopify is the plan, we will tell you early that we are not the right team.

How long does an ecommerce website take?

It depends on the catalogue, the integrations and the migration, and we set the plan only after discovery. Content usually arrives slower than code, so we agree dates for both in writing and report progress on the dates we agreed.

Can you connect the store to inventory and accounting?

Yes, in principle. Integration is scoped per system, and stock, payments and the ledger are the usual three. We agree which system owns each record first, then build a sync that reports its own failures to a person. The sync is built to flag a failed order or stock update to a person, not drop it.

Can you build a product configurator?

Yes. We built the Phantom Arcades 3D configurator, which turns a customer's choices into a clean order on WooCommerce. The effort depends on how many options interact, and we scope it in writing before work starts. The Phantom Arcades build is our reference example, and its blog case study shows how it works.

Will we own the store?

Yes. The code, the hosting account and the payment accounts are in your name from day one, and we hand over documentation. If you leave us, nothing is held back, and another developer can pick the work up. That includes the domain, so you can move hosting or developers without asking us.

Do you do SEO for online stores?

Yes, through our SEO service. Our measured example is Phantom Arcades, an online store where Google clicks rose 92 percent year on year. That result is clicks, not sales, and we make no revenue claim. Product and category page structure is usually the first thing we would look at.

Can you migrate our store from another platform?

It is a scoped project. We start with an inventory of the catalogue, customers and order history, then agree what moves and what is retired. We make no claim about past migrations, and we plan the redirects before launch. Order history and customer accounts are checked after the move, not assumed to have carried over.

How do payments work?

Your payment processor holds the card data, and we connect the storefront to it. That keeps PCI scope with the processor. We set up checkout, refunds and reconciliation to the ledger, with the payment account in your name. Test orders run end to end before launch, so refunds and reconciliation are checked early.

Do you provide support after launch?

Yes. Every build has a hypercare period right after go-live, followed by 24/7 technical support and maintenance. A person reads what you send, and the same team that built the store looks after it. Support starts at go-live, so there is no gap between the build and its upkeep.

What does an ecommerce build need from us?

Your catalogue, brand assets, the accounting system, the payment provider and your shipping rules. If any of these are not ready, we say so in week one and plan around it, rather than discovering the gap at launch. A short checklist in the first week shows exactly which of these items are still missing.

Sources for this page: Updated October 31, 2026

Tell us which two numbers never match

Stock on the site against stock in the warehouse, or orders in the store against orders in the ledger.

What to have ready

  • Your platform and its version
  • The two numbers that disagree
  • Payment and accounting systems in use
  • Peak season dates

What happens next

  1. 01Send the form on the contact page; the topic is filled in.
  2. 02A person at OneAlgorithm reads it and replies.
  3. 03If it fits, we scope it in writing before any work starts.

Tell us what you need

Topic · Ecommerce

What is the system or page that is not working? Tell us on the contact page; the topic is already filled in.

Talk to an expert

Prefer to talk it through?

(610) 890-9711

OneAlgorithm · 625 Swedesford Rd, Unit B, Malvern, PA 19355 · Mon–Fri 9–5

Where these figures come from

Every figure on this page names its source and the date a person at OneAlgorithm read it. The source pages are listed here; nothing on the page links to a data endpoint.

  • U.S. Census Bureau, Quarterly Retail E-Commerce Sales, Q2 2026

    Seasonally adjusted $340.2 billion, 17.1 percent of retail ($1,986.5 billion), up 12.2 percent year on year; the page carries a 28 September 2026 revision notice

    read 31 October 2026 · www.census.gov/retail/ecommerce.html
  • U.S. Census Bureau, County Business Patterns 2023

    NAICS 4541, electronic shopping and mail-order houses: 54,707 establishments

    read 31 October 2026 · www.census.gov/programs-surveys/cbp.html
  • Google Search Console, Phantom Arcades property

    Google clicks 1,112 to 2,130 (+92%), non-brand 95 to 314 (+231%), 13 Aug to 19 Oct 2026 against the same 68 days in 2025; the client owns the property

    read 31 October 2026