Real numbers. A starter store with bKash, Nagad, COD and up to about 50 products on WooCommerce starts at 50,000 BDT. A proper mid-size store with categories, filters, discount codes, courier integration and a full admin is around 90,000 BDT. A larger build with custom design, multi-vendor or wholesale pricing, advanced reporting and full Shopify or WooCommerce customisation is around 1,50,000 BDT. Anything genuinely custom, like a marketplace or B2B portal, starts from 3,00,000 BDT. Payment is 50% advance, 50% on launch, and I will tell you on the first call which tier actually fits.