Biggest problem hands down you will find is most people use PayPal....you don’t accept it people will just pass and move on. I only do PayPal or cash in person, I missed out on some good deals and also some sales because a couple people didn’t use PayPal and had other forms of electronic payment, I don’t want to mess with that when PayPal works just fine. I sell a lot locally on FB marketplace and never understood why all these people want to pay Venmo and pick up the stuff in person....cash is king and prefer it when I can, otherwise it’s PayPal.