I got my square pretty quick. In fact I ordered another one as a back up and it came with in a week. It tried it first on my own card for a $1 and it worked well. It gave me .97 since it takes 2.75%. You can take a picture and ad it to the transaction and the person uses their finger to sign on screen. The receipt sent has the date and time, signature, and a google map that shows where the transaction took place. On your end you get almost the same thing. You can also print out a spreadsheet off all transactions.
Here are the fine print.
Square allows you to accept unlimited payments. There are no limits on transaction size or number of transactions. We immediately deposit your first $1,000 of sales per week to your bank account. The remaining amount above $1,000 will be deposited into your bank account within 30 days of the transaction. To get a higher weekly deposit amount contact support.
Square card payment rates
Card-present (swiped): 2.75%
Card-not-present (keyed-in): 3.5% + 15¢