We use Square for our emailed invoices. I use a Clover system for point of sale through Michael Richardson of Merchant Fee Removal, which is a cool system that puts the fees on the consumer instead of the business. [email protected] 737-235-5822
I use square for in-person events or customers that want invoices. My BigCartel shop is connected to Stripe for Credit cards. If at all possible I have people pay with Venmo (business account) - about HALF the fees of square