Not sure if I like the wait time to get your money but worth a look.

GunTab

It looks interesting. I have been selling stuff on gunbroker and have found a majority of buyers are not very technologically savvy and don’t like signing up for things or having to figure out something new. I accept discrete cash app. PayPal, Venmo, Apple Pay, or postal money order but half my buyers call me and ask where do they enter their credit card number. I am going to go ahead and get set up with electronic transfers to accept credit cards. It is no commitment, $10 a month, and 3% fee which I will pass on to the buyer.if I am reading it right with guntsb the buyer has to create an account and link their bank account. I am not sure how many will want to do that.

Years ago there was a company called “GunPal”. A huge fraud, took a bunch of people’s money. Cash or Zelle for me.

Gunbroker has a pay system that works pretty slick

Gunbroker Pay