It’s sort of a racket. Some merchants even get trapped by their POS providers, forcing the merchant to use the POS providers processor or “partner”, offering no options to change the processor, unless you want to swap out your entire POS system and retrain the entire staff.
nostr:nevent1qqsvkff82my3v8sgtavf7gvhu5czz6069ngf4a58jtmral6nz3w44ncpzemhxue69uhhyetvv9ujuurjd9kkzmpwdejhgx8y3a8