I almost got scammed for supposedly selling NFTS

Hi, I'm a digital artist and a person approached me on Facebook to buy 3 to 6 of my illustrations as NFT's for 3000 each, on a platform called Artvaultmarket.pro if anyone has heard of that platform I would like to know if it is a scam or not because I uploaded two of my drawings and the guy "bought" them but for me to withdraw the funds I have to pay the platform an amount of 0.2 ETHEREUM, already there I got a bad feeling and deleted my drawings but the account is still there, I didn't use real information just in case. But I ask, has something like this happened to you? And if not, poor guy because I won't pay the fee, his money will stay there hahaha via /r/u_mallezite https://ift.tt/AIagObR