Do you take Credit cards?
If so, how do you deal with the extra fees?
Eat them?
Price higher and give discount for cash or check?
Square, it works and is free to start, though it does charge a percentage on every sale, it at least isn't subscription based.
I will charge more for cards, cause generally if and when I do charge its got a comma in it, so that % takes a pretty big wet bite. More often then not they will cough up the cash.
If yer afraid of Square there are several other apps that work similarly, PayPal, Venmo etc, little harder to use though.
(note, 95% of my business is logging on % and log trucking, which the mills pay me out of the logs, the other 5% is dumb trucking/land clearing/road building, I've mostly gotten out of "tree work")