The Crypto Way

 What if there was a straight-forward NFT platform that allowed for easily swapping NFTs versus using crypto to buy and sell them?  It could have a UX like the following:  The same transaction from the other side could look like:

With so many NFT offerings floating around, and new ones being generated everyday, where is one to trade them?  Well there are a few options out there for those who would like to trade their NFTs, Open Sea (https://opensea.io/), Rarible (https://rarible.com/), Nifty Gateway (https://niftygateway.com/), and NFT Trader (https://www.nfttrader.io/).  But where do I go to swap NFTs without using cryptocurrency?   I haven't found a place, have you?