OpenSea currently offers NFTs minted on Ethereum, Polygon, Klaytn and Solana. According to data from NFT Scan, NFTs on Arbitrum have a lifetime volume of 9,722 ETH, which pales in comparison to the lifetime NFT volume of roughly 23.5 million ETH on Ethereum. With the network’s merge that was completed last Thursday, Ethereum’s improvement may reduce the need for roll-ups such as Arbitrum to increase speed and reduce costs.