Nanette, here's a listing of all the fees.
Etsy fees:
There is no Etsy transaction fee for in-person sales, just a credit card processing fee: 2.75% per swipe (or 3% + $0.25 if you manually enter the card number).
Square:
2.75% per swipe. Manually enter card information and pay 3.5% + 15¢ per transaction.
Paypal:
Just 2.7% Per Swipe
Every US card swipe is 2.7%. No hidden costs.
Keyed transactions 3.5% + $0.15: Manually enter a card number or scan a card, at a 3.5% transaction fee plus $0.15.