Why Local Market Days Supply Beats a National Number for Trade-In Pricing
Market Days Supply should be scoped to the market where the vehicle will actually sell, not blended into a national average. A national pace can hide a car that's moving fast two provinces over and slow to move where you are, which pushes a trade-in offer in the wrong direction.
What is Market Days Supply and why does it matter for a trade-in?
Market Days Supply estimates how long it would take to sell off the currently active inventory of a vehicle at its recent sales pace. A low number says a vehicle is moving. A high number says it's sitting. Appraisal tools use that pace to nudge a trade-in offer up or down before a human ever looks at it.
The number only helps if it describes the market the car is actually going to sell in. Get the scope wrong and the nudge is wrong before anyone touches the deal.
Why can a national days-supply number mislead a local pricing decision?
A national pace blends every region into one figure. A trim that's slow in one province can be fast somewhere else, and the blended number describes neither market accurately. Feeding that into a local pricing decision means the price adjustment is reacting to demand that doesn't exist where the car is actually being appraised.
The fix isn't a smarter formula. It's scoping the search to the market first, radius, then region, then country, only widening the net as far as it has to.
How much sold data does a days-supply signal need before you trust it?
A pace built on a handful of sales is noise dressed up as a number. If only a couple of units sold in the lookback window, the resulting "days supply" can swing wildly and shouldn't be trusted to move a price at all. A reliable signal needs a real sample behind it, and a system that respects that gates the pricing adjustment off until there's enough data to trust.
bkd.ai's appraisal desk scopes Market Days Supply to the local market first and widens only as needed to find a reliable sample, so a trade-in offer reflects the market it's actually competing in.
Frequently asked questions
What is Market Days Supply?
Market Days Supply estimates how many days it would take to sell off the current active inventory of a vehicle at the recent sales pace. A low number means that vehicle is moving fast in the market; a high number means it's sitting.
Why does local data matter more than national data for Market Days Supply?
A vehicle can move fast in one region and sit in another. A national pace blends those two realities into a number that doesn't describe either market, which can push a trade-in price in the wrong direction for the store actually buying it.
How does bkd.ai calculate Market Days Supply for a trade-in?
bkd.ai's appraisal desk scopes the pace signal to the local market first, widening only as far as it needs to find enough sold units to be reliable, and it won't let a thin sample move the price at all.