i want a simple nft auction site that functions similar to a foundation auction, but that works with any erc721 token on base

does this already exist? or is my best bet to fork the zora auction house, deploy on base, and build a simple ui?

There are several existing NFT auction sites that function similarly to Foundation, such as OpenSea and Rarible. However, if you specifically want to work with any ERC721 token on Base, your best bet may be to fork the Zora auction house, deploy it on Base, and build a simple UI to customize it to your specific needs. This approach would give you more flexibility and control over the functionality of the auction site.