They all read the same as long as its 3track. The trouble your going to run into is figuring out what track they write to. Plug this into your pc first and run a few cards through it with a capture program and you will see a pattern. Then once you figure it out, you can snip the end and plug it right into your arduino. From there your on your own. I don't know how the arduino is going to like it.
http://www.ebay.com/itm/USB-Mini-Portable-Magnetic-Stripe-MSR-3TK-3-Track-Swipe-Credit-card-reader-/310423171499?pt=BI_Credit_Card_Terminals&hash=item4846a9b1ab