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How do you build a dealer ordering system? 120 retail accounts ordering by LINE and phone, 80 orders a day keyed in by hand, 3% error rate: a full plan from tiered pricing and credit limits to ERP sync, budget NT$180k–500k

2026.10.15 · 52 views
How do you build a dealer ordering system? 120 retail accounts ordering by LINE and phone, 80 orders a day keyed in by hand, 3% error rate: a full plan from tiered pricing and credit limits to ERP sync, budget NT$180k–500k
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The most common bottleneck for wholesalers and distributors: retail accounts order by LINE, phone and fax, and assistants re-key every line into the ERP. We cover when a dealer ordering portal fits, alternatives, process, real costs, five pitfalls, a 90-day roadmap and an 11-question checklist. ”

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Short answer: A dealer ordering system rests on three things: tiered pricing, credit limits and orders flowing into the ERP automatically. For wholesalers with 50+ retail accounts and 30+ orders a day, a standard build costs NT$180k–500k, goes live in 10–14 weeks, and typically cuts manual order entry by more than 70%.

The pain: 80 orders a day, two assistants doing nothing else

Bottom line: the problem is not too many ordering channels; it is that every order is typed in twice. A food wholesaler serves 120 restaurants and supermarkets that order by LINE photos, phone calls and even fax, about 80 orders a day. Two assistants spend the whole day keying them into the ERP. Product names vary, prices live in people's heads, and the error rate sits around 3%, adding NT$20k–30k a month in re-deliveries and returns.

When it fits and when it does not

Bottom line: best for wholesalers with many accounts, tiered pricing and monthly billing; unnecessary if you sell to a handful of large clients.

FitsDoes not fit
50+ accounts and 30+ orders a day5–10 fixed key accounts that can confirm by email
Different prices and discounts per tierOne price list, cash on delivery
Credit limits and monthly statementsFewer than 30 products that rarely change

Alternatives matrix

Bottom line: store builders are cheapest but rigid; a custom build costs most but keeps up with the business.

OptionUpfront costProsCons
LINE plus Google FormsNear zeroUsable todayNo tiered pricing; still re-keyed into ERP
Store builder with member tiersNT$2,000–8,000/monthFast launchCredit limits, monthly billing and ERP sync mostly impossible
ERP vendor B2B moduleNT$150k–400k plus annual feesConsistent dataClunky interface dealers avoid
Custom ordering portalNT$180k–500kRules fit exactly; LINE integrationNeeds an internal contact for 10–14 weeks

Process breakdown

Bottom line: four phases over about 14 weeks; the slowest part is pinning down pricing rules.

  • Weeks 1–2, discovery: dealer tiers, pricing rules, credit limits, delivery routes, ERP field mapping. Deliverable: requirements spec.
  • Weeks 3–4, design: Figma screens for dealer ordering and back-office review, tested with three dealers. Deliverable: clickable prototype.
  • Weeks 5–11, build: catalogue, tiered pricing, cart, credit checks and export on Laravel, with shipping alerts via LINE Messaging API. Deliverable: staging site.
  • Weeks 12–14, pilot: 10–20 dealers, two weeks of parallel channels, then full switch. Deliverable: live site and manual.

Real cost breakdown

Bottom line: beyond the build, budget 15–20% of it each year for hosting, maintenance and changes.

  • Build: NT$180k–300k standard; NT$350k–500k with two-way ERP sync and an app.
  • Hosting and domain: about NT$12k–30k a year.
  • Online payment, if used: card fees per ECPay's official rates.
  • Hidden costs: cleaning product data (often 40–80 hours), dealer training, and fees your ERP vendor may charge to open an API.

Reality vs expectation

Bottom line: the hardest part is not code but turning the owner's pricing logic into a table.

  • Expectation: dealers will self-serve at launch. Reality: about 30% still phone in for two months and need sales follow-up.
  • Expectation: pricing is simple. Reality: discovery usually reveals 6–10 exceptions, such as special prices for one dealer on one item.
  • Expectation: the ERP will connect. Reality: many local ERPs have no API and only accept file imports.

Five pitfalls and how to avoid them

Bottom line: all five can be handled during requirements.

  • Building before cleaning product data → standardise names, units and barcodes first.
  • Pricing rules only in the owner's head → build a price matrix in week one and have sales confirm it.
  • No credit check → route over-limit orders to a manager for approval.
  • Forcing dealers to create passwords → use LINE login or personal links.
  • Switching everyone at once → pilot with 10–20 dealers and run both channels for two weeks.

Success metrics and 90-day roadmap

Bottom line: by day 90, aim for 70%+ of orders online and errors under 1%.

  • Day 30: 20 pilot dealers, 30% of orders online.
  • Day 60: open to all, 55% online, manual entry time halved.
  • Day 90: 70%+ online, error rate under 1%, orders reach the ERP the same day.

Decision checklist

Bottom line: six or more yes answers out of 11 means an ordering system is worth planning.

  • ☐ More than 50 retail accounts?
  • ☐ More than 30 orders a day?
  • ☐ Two or more price tiers?
  • ☐ Credit limits or monthly billing?
  • ☐ Order errors above 2% a month?
  • ☐ Assistants spend 3+ hours a day keying orders?
  • ☐ Frequent stock-outs needing substitutes?
  • ☐ ERP accepts Excel imports or has an API?
  • ☐ An internal contact can give 4 hours a week?
  • ☐ Most dealers already use LINE?
  • ☐ Budget can cover NT$180k or more?

FAQ

How much does a dealer ordering system cost?

Usually NT$180k–500k; the spread comes from pricing-rule complexity and whether you need two-way ERP sync.

How long does it take?

About 10–14 weeks for a standard build; add 4–6 weeks for two-way ERP sync or a mobile app.

What if dealers do not want to learn a new system?

Let them order from a LINE link without passwords and offer a reorder-last-order button; that keeps the barrier lowest.

Can we use Shopify or a store builder?

For a simple version, yes, but tiered prices, credit limits and monthly billing usually need plugins or are impossible; it tends to break past 50 accounts.

Must it connect to the ERP?

Not at first. Phase one can export to Excel for ERP import; automate the sync once volume is steady.

Next step

The B2B Dealer Ordering System package from ScriptWalker (a Taiwan-based Laravel/Flutter custom development studio) starts at NT$180k and includes tiered pricing, credit limits, LINE notifications and order export. Send us your pricing rules and daily order volume and we will reply with a free scope and timeline estimate:

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