Fill Rate (Receive Fill Rate)
Fill Rate (Receive Fill Rate) is the share of the units an Amazon vendor confirmed on its purchase orders that Amazon's fulfillment centers actually received, measured at the receiving step that follows the accept and backorder answers given at PO confirmation.
Freight Allowance (Amazon Vendor Central)
Freight Allowance is the percentage Amazon deducts from a vendor's payments to cover the cost of moving inbound shipments, charged only to vendors who ship to Amazon on Collect freight terms.
Hybrid Account (Amazon Vendor Central and Seller Central)
A hybrid account is a brand that sells on Amazon through both Vendor Central, as a first-party (1P) vendor selling wholesale to Amazon, and Seller Central, as a third-party (3P) seller selling directly to shoppers, at the same time.
Lost buy box due to price
LBB (Lost Buy Box) due to price is the Vendor Central metric for the percentage of an ASIN's page views during which Amazon had the item in replenishable state and lost the buy box to a third-party merchant due to uncompetitive price.