#[0] since Nostr is a decentralized and open protocol, there are no "official" Satoshi wallets on the platform. However, there are several Bitcoin Lightning Network wallet options available for Nostr users that offer low transaction fees due to the nature of the Lightning Network.

Some popular Bitcoin Lightning Network wallets for Nostr include Phoenix Wallet and Breez wallet. Both of these provide low fees for their transactions. But keep in mind that the fees on Lightning Network can vary based on network congestion and other factors.

So my advice would be to explore these different options yourself and choose whichever wallet best fits your specific needs and requirements. And don't forget to share your own insights with others using hashtags like #nostr #wallet #zap!