Amazon Fast Track buy box
Fast Track Buy Box rate is an Amazon Vendor Central metric that measures vendor performance and product availability, taking into account the in-stock percentage, pricing, and selection of your available items, and it tracks how often those items carry a Fast Track offer.
Fast Track Buy Box rate is an Amazon Vendor Central metric that measures vendor performance and product availability, taking into account the in-stock percentage, pricing, and selection of your available items, and it tracks how often those items carry a Fast Track offer.
What it is
The shopper sees the result on the detail page. When an item has a Fast Track offer, the page carries a delivery promise with a countdown, for example: “Want it delivered Tuesday Dec 19th? Order in the next XX hours and XX minutes.” Your stock, price, and selection decide whether that message appears, and the countdown is the part the shopper actually sees.
The calculation is usually given as Fast Track customer glance views on replenishable items divided by total customer glance views on replenishable items, times 100 (Saras Analytics). So the figure is the share of detail page traffic on your replenishable catalog that arrived while the Fast Track offer was showing.
Search results mix this metric up with two unrelated things. Seller Central’s Buy Box, the offer that rotates between third-party sellers on price and fulfillment, is a different program with different mechanics, and this metric belongs to 1P vendors in Vendor Central. Amazon’s Compliance Fast-Track in Seller Central is a product-compliance program and has nothing to do with Buy Box or delivery promises.
Where it lives in Vendor Central
You can find the same value on the “Operational Metrics” report under the name “Fast Track Buy Box rate” (previously “Fast track Buy Box”). If you’re coming from Seller Central, treat it as a vendor-side availability measure, because it doesn’t report your share of a rotating third-party Buy Box.
Why it matters to a vendor
Every glance view outside the numerator is a shopper who reached your detail page on a replenishable item and saw it without the Fast Track delivery promise. You’d already earned that traffic, so the fix sits with that ASIN’s stock position, price, or selection in the period the rate dropped.
Operational guidance from Tinuiti treats a figure below 75% as a concern and 90% or above as the goal. Read the rate per ASIN instead of as a catalog average, and when one falls under that line, check which of the three inputs moved first.
Related terms
- Lost buy box due to price: the sibling metric on replenishable items, where the offer went to a third-party merchant on price.
- Out of Stock & Replenishable: the share of glance views that arrived while a replenishable item was out of stock.
- What Are Glance Views on Amazon?: the traffic unit both sides of the calculation count.
- Every Amazon Vendor Central Report, Defined: definitions for the other reports in Vendor Central.
- Glossary index: the rest of the Vendor Central terms and InsightLeap metrics.
