So Im not selling it anyways.
Since you say you have no intention of selling it, and you paid $20 for it, it's a steal. The main question becomes "do you like the sound of Vistalite"? If yes is the answer, then non-factory parts won't cost that much, to get this drum up and running. A players drum. A drum in excellent/good shape might land $500, or more. But finding a buyer, that's the rub. eBay reaches the most people.
The drum, as it sits, might fetch $200 - $300. Again, that would be a buyer who really wants this drum. And, you'd have to clean it, and take better pictures of it. The pictures you posted make it look like it's had a hard life.
Most cats are more into the 16 and 18 inchers. Fewer buyers out there, for the 20 .... but you only need one. Except you're not gonna sell it. So, it's really just all speculative.
A little bit of info., about Vista's. Clear and blue were the most produced colors. Green, one of the rare colors. So, clear and blue drums don't fetch the money that amber, yellow, red, or green do.
I paid just over $500, for my red Vista 16" floor (pointy corners). I paid more, for my 22" kick, than my 24", but that's because the 22 was a virgin. The 24 has a flange. Little things like that, increase or decrease value.