Are skins worth it?

Skins come down to preference. If you care enough about the game to spend money, then go for it. If not, so be it. The nice thing is, you can buy a skin, use it, and then sell it and get back most of your money. EG. I bought a Medusa for $300. Played with it for a year, and then sold it for $700. Basically got paid $400 to own it for a year