Everything that decides a car's price, in one place
Free shows you the market. Pro shows you what it did. Collector tells you what to do about it.
A market value on every car
Built only from real, completed sales. Recomputed twice a day.
Your garage, tracked daily
Add the cars you own and watch each one's value and gain.
Every sold price
What each car actually sold for, with a link to the original listing.
Buy, hold or sell
One call per car from every verified sale, with how sure it is.
PROWhere values are headed
Bear, base and bull projections at 3 and 5 years.
Price and signal alerts
Hear the moment a car you want moves, or a match is listed.
Compare cars side by side
Values, signals and history for the cars on your shortlist.
Is that listing a deal?
A mileage-adjusted fair ask and a verdict for any asking price.
◆ COLLECTORThe best month to buy
Each model's seasonal low, plus its estimated market bottom.
◆ COLLECTORWhat every option is worth
Manual, paint-to-sample, ceramics: the measured premium of each.
Act-now calls on your cars
Flags the cars you follow when a real listing lands under market or a signal turns.
Rad's Market Update
His current picks and the price he'd pay, when the market moves.
Not estimates. The whole picture.
Other tools give you a number. DriveIndex shows you the signal, the timing, the options, the forecast, and whether the car in front of you is actually a deal.
A buy, hold, or sell call, with a confidence score
The Value Signal reads every verified sale of a model, adjusted for mileage and season, and makes one call: Appreciating, Near Bottom, Bottomed, Stable, or Depreciating, with how confident it is.
See exactly what every option is worth
Manual vs. auto, paint-to-sample, ceramics, a rare package: the spec engine compares like-for-like sales and tells you the real dollar and percent each one adds, with the sample size behind it where it's measured.
Buy in the dip. Sell at the peak.
Prices for the same car swing with the seasons. DriveIndex measures each model's monthly pattern across years of sales and tells you the best months to buy and the months to avoid, plus where its market is likely to bottom.
See where values are headed, honestly
Bear, base, and bull projections at 3 and 5 years, anchored to the model's own sale history. Confidence drops as the horizon grows, because the future is uncertain and we won't pretend otherwise.
Is that listing actually a deal? Know in seconds.
Found a car for sale? Drop in the price and mileage. The Listing Analyzer returns a mileage-adjusted fair ask, a verdict, the exact dollar gap, and where the ask lands against the model's own recent sales.
Add any car to your garage, and track it like a portfolio
Build your collection, then watch it the way you'd watch stocks. Every car's value is recomputed twice a day, so you always know what each one is worth and how much it's up or down. Free.
Start free. Upgrade when it pays for itself.
Collector is $39.99/mo, about $1.31 a day. One avoided overpay covers years of it.
See the market
Create free accountSee what the market did
Upgrade to ProKnow what to do about it
Become a CollectorBuilt on real data, honestly
Values come from cars that actually sold. Never asking prices, estimates or unsold high bids.
Every value accounts for miles, so a high-mile car isn't judged by a garage queen. Collector re-prices any car to its transmission and options.
Each signal says how sure it is. Thin data is capped, never dressed up.
Sales collected daily; values and Value Signals recomputed twice a day.
Want a human on it?
The team behind the data will help you buy your next car. Open to everyone: no account, no subscription.
No account needed · consultations fully refundable with 24-hour notice · Source & Negotiate backed by a satisfaction guarantee
Questions, answered
Where does the data come from?
Every valuation is built from real, completed sales (204,351 of them), aggregated daily from 25 auction houses and dealer marketplaces. We never use asking prices, dealer estimates, or unverified numbers.
Why is this better than a price guide?
Price guides give you a static range. DriveIndex gives you a mileage-adjusted fair value, a buy/hold/sell signal with a confidence score, the best month to buy, what each option is worth, and a deal score for any listing, all recomputed twice a day.
Is the free plan actually useful?
Yes. Browse every model, see its current market value and when and at what mileage it recently sold, track your own cars in a personal garage with their daily value and gain, and flag any of them as open to discreet offers, free forever. Pro adds every sold price and the Value Signal; Collector adds the timing tools, deal verdicts and Rad's picks.
What's the difference between Pro and Collector?
Pro is the data layer: every sold price, every source, the Value Signal's buy, hold or sell call, and projections. Collector is the decision layer: act-now calls on the cars you follow and own, deal verdicts on live listings, the best months to buy and estimated bottom dates, what each option is worth, and Rad's Market Update. Professional is the trade tier for dealers, flippers and wholesalers: everything in Collector plus the Dealer Desk, with Open to Offers, private offers on cars that are not for sale anywhere else.
How accurate are the values?
Every value is built only from completed sales (never asking prices), normalized for mileage and season, and each one carries a confidence score. When the data is thin, the confidence is capped and we say so rather than dressing up a guess. No model can promise what a car will sell for; ours tells you exactly how sure it is.
Can I cancel anytime?
Anytime, from your account. No call or email needed, and you keep access through the end of your billing period.
What if a car I care about isn't covered?
Request it in the app; anyone can, free. We review every request and add the cars whose sales we can track, with their full sales history.
Stop guessing.
Start knowing.
Explore the whole market free. Go Collector when you want the edge that pays for itself in one buy.
Free plan: no card needed · Paid plans: cancel anytime · 204,351 sales and counting