If you are searching for great merchant service rates, you may come across Costco and it's promise of rock-bottom merchant account rates. Costco, known for it's low prices on almost everything so why not credit card processing, right? I'll let you decide that for yourself. The first thing you should know about the costco merchant service program is they don't have anything to do with it other than their name. They have partnered with Elavon, a large processor to handle all the heavy lifting. With all the claims of great rates and service, you would not be doing your due diligence if you did not at least give Elavon the once over. When you do of course, you may not like what you read. These complaints should not come as a surprise however, as it follows the old adage, " if it's too good to be true, it probably is".