Mystic Tomato is an iconic card in Yu-Gi-Ohs history and if youre looking to put a bit of nostalgia back in your deck this guy is the perfect option
There are likely things you can still do now to change your situation, but only if you can muster up the positivity to see things in a new light, and take action
Different stores have different techniques, but it generally comes to down to something like Mint/Near Mint (M/NM) being the best followed by Slightly Played (SP), and Played (PL), Heavily Played (HP), and finally Poor
All of this is to say it sort of evens out in the end into a mildly playable card, but only in certain decks
I even Top 8'd a Khans of Tarkir Limited Grand Prix
TCGPlayer has 123 copies listed currently, which is a lot for a card experiencing a spike like this