How much per month is it going to cost you? My wife sure could use this for her business if its cost effective.
It's free. As is the hardware. It's Intuit GoPayment (you need both the app - which is free, and the hardware - which is free).
http://gopayment.com/ go there, apply for the hardware, wait about a half minute, when it says "yay you are awesome and we approve you" then you go and download the app to your smart phone (android, blackberry, iphone, etc) and await the hardware in the mail.