Cost + timeline for an industrial-MRO Magento build + my credentials

Realistic ranges for a regional industrial distributor with $5M, $30M GMV:

• Audit: $499 fixed-fee, 5 business days, ~20h @ $25/hr. Catalog architecture review, EDI gap analysis, OEM cross-reference feasibility, vending / punchout / VMI inventory map, written platform-fit recommendation. Best fit when you’re evaluating Magento and want a second opinion before committing.
• Build: $4,999 fixed-fee, 6 weeks, ~200h @ $25/hr. Magento catalog scoped at 50k, 100k SKUs (full EAV attribute architecture), 1 EDI partner end-to-end (850/855/856/810/820 round-trip), OEM cross-reference module seeded with your existing data, 1 punchout (cXML or OCI), Net-30 customer-group pricing + 5-tier contract pricing scaffold. Best fit when you have one anchor B2B customer to validate against.
• Custom enterprise: quoted in 24h. 500k+ SKU catalogs, 5+ EDI partners, vending machine fleet integration, full VMI workflow, multi-warehouse / cross-dock / drop-ship, ERP integration into NetSuite or SAP S/4HANA. Typically a 4-12 month engagement. Pricing scales linearly at $25/hr; a typical custom enterprise scope lands at $40k, $180k.

Ongoing: $2k, $8k/mo retainer for EDI customer onboarding, punchout customer onboarding, quarterly catalog hygiene, monthly EDI reconciliation, and VMI bin-level data refresh.

My credentials: Adobe-Certified Magento 2 + Hyvä developer, 8+ years of B2B industrial Magento builds (fasteners + bearings distributors, safety supply, abrasives, electrical). EDI integrations against SAP, Oracle, Plex, IFS, Epicor, NetSuite. Punchout integrations with Coupa, Ariba, Workday. Vending integrations with CribMaster and AutoCrib. Public reviews on Upwork (clickable in the testimonials section above).