Merchants are the middle man for credit card payment when someone buys something from you site. The most important thing to check before you sign up with any merchant is, their charges.
Charges or fees can be in the form of:
- Registration fees
- Transaction fees
- Credit card fraud penalty fees
- Set up fees
- Yearly or monthly fees
Make sure you cost in all these fees into the selling price of your products!
Need a merchant account? Check out Paypal