Funky for sure
In the long run, this will save you a ton of money, but theres no getting around the fact that a lot of MTG cards carry high price tags on the secondary market due to their power level, rarity within a set, and overall scarcity in the market or reprint potential (typically caused by the Reserved List, but not always)
Suffices to say Im an old dog, I know this game like I know my own face
Like most Pokmon cards, the value of Machop depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Stormfront)
For example, if an effect has given a 2/2 creature -4/-0 so that it's a -2/2 creature, doubling its power and toughness gives it -2/+2, and it becomes a -4/4 creature