This could be discouraged with reputation mechanism but it seems that the app encourages creating a new identity for every order, which impedes establishing reputation.
Discussion
We will have reputation mode also in the future, when we fully implement nostr:nprofile1qqsdhc93hklp988r3km4844fjln298nf8t7s92sar7dsqha88ph9cfspz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsz8thwden5te0dehhxarj9e3xjarrda5kuetj9eek7cmfv9kz7qg4waehxw309aex2mrp0yhxummnw3ezucn89uv7r8lk protocol, so user will be able to choose. Also planned is choice of offer type: physical store/ ATM / ecommerce good / online bill payments.