Openseea became very busy with the NFT Hype even Opensea's All-Time NFT Sales Volume Passed $20 Billion since they were created in 2017.
Of course, this is an extraordinary record for them because they are now one of the leading markets now and outperform its current competitor, NFT Looksrare.
Apart from some scams and manipulations in it this is of course a sizeable amount for NFT Sales on the Marketplace.
Source : https://news.bitcoin.com/openseas-all-time-nft-sales-volume-crosses-20-billion/