If you are setting merchants up to process credit cards you will likely run in to a time or two where you will need to buy equipment. Even if you are placing terminals with Total Merchant Services free terminal programs you many need additional terminals and the merchant would rather purchase them than rent. Card Machine Outlet has a wide selection of credit card terminals that all come with a 1 year manufacture warranty. They also have discounts when you purchase more than 10 units at once so that you can stock up and resell at a profit.
http://www.cardmachineoutlet.com/