From #180 review. In payload_builder, the 6-tier apparel pricing sets vendor_price = round(base_vendor * factor, 2) where factor is the APPAREL_VOLUME_TIERS multiplier (0.90–1.00). Wholesale cost does not drop with quantity (SanMar returns no qty breaks). The volume factor must scale the sell price only — record vendor_price = base_vendor un-scaled. Otherwise OPS records an understated cost.
From #180 review. In payload_builder, the 6-tier apparel pricing sets
vendor_price = round(base_vendor * factor, 2)where factor is the APPAREL_VOLUME_TIERS multiplier (0.90–1.00). Wholesale cost does not drop with quantity (SanMar returns no qty breaks). The volume factor must scale the sell price only — recordvendor_price = base_vendorun-scaled. Otherwise OPS records an understated cost.