[mintacular]

No offense, but most vintage cards don't jump up and down i.e. "on the rise" by taking a small snapshot of five recent sales, and you are comparing apples and oranges depending on the tpg, quality of card in that holder, etc. I think you could try and build a case for certain rookie cards in certain grades i.e. '55 clemente with data over several years but saying the 62 mantle switch batter 5 is "on the rise" is probably not accurate, and if it is, not supported by the data you have posted.

In short, I think it's deceptive/ inaccurate advertising to make this claim on these cards