Cost + timeline for an electronics platform migration to Magento?

Realistic ranges by SKU + complexity tier:

Tier 1: 2k, 10k SKUs, single warehouse, B2C-only, Amazon only

• Build: 10-14 weeks. Cost: $35k, $70k.
• Stack: Magento Open Source + Hyvä + M2E Pro (marketplace) + Mirasvit RMA + simple PIM (or no PIM if catalog stable).

Tier 2: 10k, 50k SKUs, 2-3 warehouses, 20-40% B2B share, Amazon + eBay

• Build: 14-20 weeks. Cost: $80k, $160k.
• Stack: Magento Open Source + Hyvä + Codisto (marketplace) + Akeneo PIM + Aheadworks/Mageplaza B2B + Mirasvit RMA + MSI configuration.

Tier 3: 50k+ SKUs, 4+ warehouses, >40% B2B distribution, Amazon + eBay + Newegg + Walmart

• Build: 20-32 weeks. Cost: $180k, $400k.
• Stack: Adobe Commerce (native B2B) or Magento OSS + Aheadworks B2B suite, Hyvä, Channel Advisor (marketplace), Akeneo or Pimcore enterprise, Mirasvit RMA + Extend warranty integration, custom MSI source-selection algorithm, ERP integration (NetSuite / SAP).

Pricing is a fixed written quote for your scope. Send the details on WhatsApp and I reply within one working day.

I quote fixed-fee for Tier 1 + Tier 2; Tier 3 is time-and-materials with weekly check-ins because surprises are inevitable.