possible fraud by merchant?

Thanks for bringing this concern to me, customer safety is very important. While I don't have insight into individual merchants, PriceCheck aims to list trusted retailers. Some options from the search that seem relevant for protecting your information include: The Thermal 57mm X 40mm Credit Card Paper Rolls in a box of 100 could help you record important details for tracking purchases. And the Rfid Shielding Credit Card Case in black and silver and Credit Card Case: Hard-shell Rfid Fraud Blocking Card Case Grey both offer ways to block wireless signals to help protect your card information from potential scanning when making in-person payments. PriceCheck allows you to filter reviews so you can read feedback from other shoppers to help evaluate the reliability of specific sellers. Please let me know if you need any other recommendations as you look out for secure options!