This NASCAR collecting can drive you crazy! Here is what I've come to see in the NASCAR die-cast hobby:
There are several scales = 1:18, 1:24, 1:43, and 1:64
There's also several manufacturers; Action being the largest, Revell (later bought out by Action), Winner's Circle, Team Caliber, Racing Champion's, Hot Wheels, etc.
Depending on the best collectible, only Action, Revell, and Team Caliber offer the nicest quality, best detail, and most limited numbers. Several years ago, Hot Wheels did have one of Kyle Petty that with the press of a button, would start-up, and the wheels would turn with the announcements and impression of going down the track (perhaps a more successful driver would've boosted sales).
As far as finishes, they have tried many different color variations while still trying to keep the sponsor graphics intact, such as: Regular, Platinum, Color-Chrome, brushed stainless, "test car" versions, etc.
With variations of the same car; there are the regular clear window version, the bank (some in clear window and others in solid black with no interior detail. They also have some of the lower cost variety that is curbside only (no hood or trunk detail) and simple to no interiors.
Then there are clubs you can get into (such as RCCA) where you get a monthly flyer showing the latest items (some available to club members only) where you can purchase items prior to public distribution.
And let's not forget about the residual NASCAR die-cast collectibles such as the haulers (semi-trucks, dually pick-ups with an open or closed trailer, vans, sport utility vehicles, and more including garage items, pit road items (including "war wagons")
One downside for me is the lack of quality die-cast 1:18th cars that have any detail or accuracy for under $60.00 (Winner's Circle for $ 29.00 are nothing more then crude toys). Depending on the year they were made even some of the high dollar ones are crude (early models).
Finally, depending on the success of the driver who is associated with a specific sponsor car will have a direct impact on the perceived value of the die-cast itself. If the driver is racing well, then the prices are up. If the driver is doing bad, you can't even give the stuff away (figure of speech).......
NASCAR Collecting is fickle....... But I can't stop either.....