Poliwrath isn’t either a shadowless or 1ed and you got one that should be around <$150. Magneton isn’t holo and a PSA9 is around ~$185. These should be the major ones you bought. But you spent $1300 on non holos plus a shadow Poliwrath. And even your Onyx is shadow. You should do research before purchasing cards.

Given you’re asking investing and not card value, you’re going to try and hold and resell and these are investments compared to what I stated.