T-206 Back Rarity Pricing?

[Luke]

The short answer is that you kind of just have to look at a bunch of actual sales to get a hang of pricing. If you try to use someone's rule of thumb it will likely be helpful to get you in the ballpark, but will still be off by a pretty decent percentage. All those numbers you list are outdated at this point and t206museum hasn't been an active site in many years so those multipliers likely aren't too helpful.

Best bet is to scour the ebay sold listings using 130point.com, search for all the backs you're interested on REA, Love of the Game, and Sterling Auctions completed sales, and use google to find specific front/back combos that have sold. Just know that any sale older than a couple years probably needs to be adjusted up for today's market.

Just one of the many great things about collecting t206s is that they change hands all the time, so you can have a get real good sense of the market if you do some research and then continue to monitor realized prices.