Square Rings Up Coffee Fine; Your Detroit Parts Counter Needs Cores, Accounts, and Fitment
A custom POS (Point of Sale) for a Detroit parts counter, dealership, or service operation runs $35k to $120k over 3 to 6 months. Square, Toast, Clover, and Lightspeed are built for retail and restaurants. They stall at the counter your business actually runs: core charges and exchanges, house accounts on net terms, fitment lookup, and a tie between the sale and a work order or the back-counter inventory.
Square is excellent for a coffee shop and Toast for a restaurant. A Detroit parts counter is neither. Selling a remanufactured alternator means handling a core charge, the deposit, and the refund when the old unit comes back, which a retail POS treats as an awkward manual line item. Your wholesale shop customers buy on a house account with net-30 terms, not a card swipe, and the counter person needs fitment lookup to confirm the part fits the vehicle before ringing it.
Service shops have it worse. The sale is downstream of a work order: parts pulled to a job, labor logged, then invoiced together. A retail POS has no work-order concept, so the back counter re-keys everything and the parts inventory drifts from what the system thinks is on the shelf. The expensive lesson is the month-end where house-account balances, core liability, and on-hand counts all disagree because the POS was never built for any of it.
- Core charges and exchanges are a manual mess every day
- Wholesale customers need house accounts a retail POS cannot do
- Service work orders force re-keying and inventory drift
- Fitment errors at the counter are driving returns
- You run a simple retail or food counter with card payments
- You have no cores, house accounts, or work orders
- Square, Clover, or Toast already fits your checkout
- You have under $30k and an off-the-shelf register is enough
- Core charges, deposits, and refunds handled natively instead of as error-prone manual lines
- House accounts with net terms and credit limits, so wholesale customers buy the way they pay
- Fitment lookup at the counter, cutting wrong-part sales and returns
- Work-order integration ties parts and labor together, ending re-keying and inventory drift
- One reconciled view of till, core liability, account balances, and on-hand stock
- More than a Square account upfront; you are buying counter-specific logic
- Payment processing and hardware integration add scope you must plan for
- Staff need training on a richer system than a tap-to-pay register
- A simple retail or food counter genuinely does not need this; off-the-shelf wins there
The honest cost picture for Detroit
| Project scope | Typical cost | Timeline |
|---|---|---|
| Counter POS + cores + house accounts MVP | $35k to $60k | 3 to 4 months |
| Fitment lookup + inventory + payment integration | $60k to $90k | 4 to 5 months |
| Work-order integration + multi-location + ERP (Enterprise Resource Planning) sync | $90k to $120k | 5 to 6 months |
Feature priorities for Detroit teams
What we build under POS in Detroit
The engagements Detroit teams bring us most often: Square alternative, Toast alternative, Clover, Lightspeed, mobile POS and payment processing integration.
Exactly what you get
A POS built for a Detroit parts-and-service counter. It handles core charges, deposits, and refunds natively, runs house accounts on net terms with credit limits, looks up fitment by vehicle before the sale, and ties each transaction to a work order and live back-counter inventory. At month-end the till, the core liability, the account balances, and the on-hand count finally agree, because one system ran all of them.
How to choose a developer in Detroit
Pick a team that has built counter systems with cores and house accounts, not just retail checkout. Ask how a remanufactured-part core flows through a sale and return. The strongest builds connect the POS to your inventory management software, your accounting software, and your field service management software so a counter sale, a service work order, and the ledger stay one truth.
Timeline: what happens, and when
- !They only know retail or restaurant POS; ask how they handle core charges
- !No house-account concept; ask how net-terms wholesale buyers check out
- !They skip work orders; ask how service parts and labor invoice together
- !No fitment lookup; ask how the counter confirms a part fits before the sale
- !Fixed quote without a counter walk; ask for paid discovery on cores and accounts
Teams investing in pos in Detroit usually scope it next to supply chain, business intelligence dashboards, booking & scheduling, since these systems share data and budgets.
Rohan advises mid-market and enterprise teams on ERP, CRM and custom software, and has led delivery on dozens of business-software builds.
Writes for Digital Heroes, shipping business software for 2,000+ brands across 55+ countries since 2017.
Frequently asked questions
How much does a custom POS cost in Detroit?
Expect $35k to $120k. A counter POS with cores and house accounts starts near $35k to $60k. Adding fitment lookup, inventory, and payment integration runs $60k to $90k, and work-order integration with multi-location and ERP sync reaches $120k.
Why won't Square work for a parts counter?
Square is built for retail and food. A parts counter needs core charges and exchanges, house accounts on net terms, fitment lookup, and work-order links, none of which Square handles cleanly, so they become manual workarounds that drift.
Can the POS handle core charges?
Yes. A custom POS handles the core deposit at sale and the refund when the old unit returns as native transactions, so your core liability is always accurate instead of reconstructed from manual line items.
Does it support house accounts and net terms?
It does. Wholesale shop customers buy on house accounts with credit limits and net-30 terms, and the system produces statements, so they buy the way they actually pay.