The verdict in three sentences
A custom B2B ordering portal costs between USD 45,000 and 80,000 in 2026 for a Miami heavy truck parts wholesaler with 28,000 SKUs, delivered in 5 months. The return comes from cutting order entry time and part number errors, not from opening a new sales channel. The realistic target is to move 50% of the 400 daily orders online within 9 months of launch.
Why phone and WhatsApp cap out at 400 orders a day
The CEO of a Miami wholesaler serving 1,300 repair shops and fleet operators knows the routine: six inside sales reps answer non-stop, read a photo of a manufacturer plate sent on WhatsApp, look up the cross-reference in the ERP, check stock at the Doral warehouse, then call the customer back. An order takes 7 to 9 minutes on average. At 400 orders a day, that is more than 50 hours of daily data entry, with a 3 to 5% wrong-part rate that drives returns, return freight and disputes.
A B2B portal moves the search to the customer: the shop foreman types an OEM part number (Freightliner, Peterbilt, Kenworth, Volvo, Mack) or a VIN, sees the cross-references, the account's negotiated price and live stock, then checks out. Reps only handle complex cases and the relationship.
| Metric | Before portal | After portal (9-month target) |
|---|---|---|
| Orders per day | 400 | 450 (more capacity) |
| Share placed online | 0% | 50% |
| Average handling time | 8 min | 2 min online, 8 min by phone |
| Data entry hours per day | 53 h | 30 h |
| Wrong-part rate | 4% | 1% |
| After-hours orders (after 6 pm) | impossible | 12 to 15% of online flow |
What the USD 45,000 to 80,000 budget covers
The price range depends mainly on catalog data quality and ERP integration complexity (Epicor, NetSuite, SAP Business One or an industry DMS). A 28,000-SKU catalog with incomplete OEM cross-references requires a real data cleanup effort.
| Work package | 2026 range (USD) | Detail |
|---|---|---|
| Discovery, UX and mockups | 4,000 to 7,000 | Workshops with reps and 5 pilot shops |
| Catalog and search engine | 11,000 to 20,000 | OEM search, cross-references, make and model filters |
| VIN search | 5,000 to 9,000 | VIN decoding mapped to compatible parts |
| Real-time ERP stock and pricing connector | 9,000 to 17,000 | Stock per warehouse, customer price lists, credit limits |
| Customer accounts, cart, quotes, history | 7,000 to 12,000 | Multiple users per shop, manager approval |
| Catalog data migration | 4,000 to 8,000 | Cleanup, photos, spec sheets |
| Testing, training, go-live | 5,000 to 7,000 | 4-week pilot with 50 customers |
| Total | 45,000 to 80,000 | Delivered in 5 months |
Add application maintenance of USD 800 to 1,500 per month (bug fixes, minor changes, monitoring, cloud hosting). Plan USD 200 to 400 per month for hosting if billed separately, plus an SMS or WhatsApp Business API budget for order notifications.
Custom build or packaged B2B platform?
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International B2B SaaS platforms handle carts and accounts well, but rarely VIN search, heavy truck cross-references and a customized ERP connection.
| Criterion | Custom portal | Packaged B2B SaaS | ERP e-commerce module |
|---|---|---|---|
| Upfront cost | USD 45,000 to 80,000 | USD 8,000 to 20,000 integration | USD 6,000 to 15,000 |
| Annual recurring cost | USD 9,600 to 18,000 (maintenance) | USD 12,000 to 30,000 in licenses | USD 3,000 to 8,000 |
| OEM and VIN search | Native | Custom work or missing | Missing |
| Real-time multi-warehouse stock | Yes | Often hourly sync | Yes |
| Shop-floor mobile UX | Designed for the field | Decent | Poor |
| Code ownership | Client | Vendor | ERP vendor |
Mini case study
Marco, CEO of a heavy truck parts wholesaler in Miami, invests USD 62,000 plus USD 1,200 a month in maintenance. At 9 months, 200 orders a day go through the portal. Each online order saves 6 minutes of entry: 200 x 6 = 1,200 minutes, or 20 hours a day, the equivalent of 2.5 positions. At a loaded cost of USD 4,200 per month per rep, savings reach USD 10,500 a month. Fewer wrong parts (from 4% to 1%) avoid about 12 returns a day, close to USD 6,000 a month in freight and handling. Total gain: about USD 16,500 a month, minus USD 1,200 of maintenance, or USD 15,300 net. Payback in about 4 to 5 months, before counting after-hours orders.
FAQ
How long does it take to launch the portal? Allow 5 months of development, including a 4-week pilot with around 50 shops. Catalog migration for the 28,000 SKUs starts in month one so it does not delay go-live.
Can the portal show different prices per customer? Yes, the ERP connector pulls each account's negotiated price list, discounts by product family and credit limit. A small shop sees its prices, a fleet with 80 trucks sees its own.
Do we need reliable VIN data to start? No, OEM part number search is enough at launch. The VIN module (USD 5,000 to 9,000) can go live in phase 2 once vehicle-to-part mappings are consolidated.
How do we get shops to order online? Wholesalers that succeed offer a 1 to 2% online discount for 6 months and train foremen in 20 minutes. The 50% target is usually reached between 6 and 12 months.
What does USD 800 to 1,500 a month of maintenance cover? Bug fixes, ERP connector monitoring, security updates and 1 to 3 days of enhancements per month depending on the plan.
Let's scope your project. Send us your SKU count, your ERP and your number of active accounts: we will price a B2B portal between USD 45,000 and 80,000 with a 5-month plan. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
