Yet that, Side by Side, Coming or Going, and Flip Flop all operate on that principle, don't they? And maybe to a certain other degree, Five Price Tags?
Well, the first two you mention, at least, are precisely Double Prices, just with a gimmick as to what the possible answers are. Flip Flop is effectively Triple Prices, which can also be said of Pick-A-Number, Squeeze Play (when it's a four-digit prize) and Balance Game (among others I'm sure). Five Price Tags is a bit of a reach since the number of chances the contestant gets is variable. But all of the others: one chance to select the right price out of a short, finite list of options. Nothing more.
(Note that I think there's a slight difference between "guess the price of this prize" and "guess the prize this price belongs to", which is why I'm not including One Right/Wrong Price in this discussion.)
I think the reason Pick-A-Number is coming up so often isn't just because of the lame binary/ternary (hey, I learned a word today!) format, but because the prop itself is just plain FUGLY. I mean, it's awful. The colors are garish, the font they use for the numbers is horrible, it's just bad.