stateethereum.com

I might have been caught in a scam Ok, so, i am selling a game account on a site for that kind of crap, and i left my discord there so i can get offers. So, this dude is interested in the game, he sends money through a crypto site that he sent to me, i was a fool and i created an account there, all good, money appear in my deposit. I try to withdraw, i get errors, asking 100$ for a test pay, i was a dumbass and i payed that, and i still cant withdraw, because surprise, another error that says i need to pay an 149$ USD tax to be able to withdraw the money. At this point i\`m not going to continue, because its sus as hell, but here i am wondering, is it really a scam ? Or is that what people need to do on this kind of sites ? The site in question is https://stateethereum.com/ Help me.