I'm not sure which is the correct way to say it, but I would argue that they are the Bitcoin standard or that buying from them is the type of thing you do on a Bitcoin standard.

nostr:nevent1qqst5w2xzx4fr23klceu09qhvugv3qtfvl7pg52pjh8p2f6hmrg2m6cpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsygrr66vn98dcuwzknujcnd4r4fas7gcuajp6w7y798c289ncr0tawgpsgqqqqqqszatqde