Rate is variable item in the equation,but just because you have a low rate does not equate to saving money if you are not properly set up.You must understand whoare your customers and what type of cards they use (ie) Corp,Purchasing,Govt,Consumer etc.from there you can start to discuss rates.Most reps in processing industry are uneducated on their own product,as it shows in most of the statements i see,example last statement i reviewed a florist shop and saved the company $750 a month because they were not set up properly and the owner said she just a rate review by her rep and got it lowered.Yes she sure did for consumer cards but most of her business came from Corporate cards which have a different rate which by the way her rep did not know.Anyways if you have a question i would be more than happy to answer and help any forum member navigate my industry,because I make it my business to help my clients get the best solution and save money in the process.
I have used Authorize.net through Truthinprocessing.com without any problems. It was easy to set up with my Yahoo! store and the customer service was great.
I heard that Google has a merchant account cart. You might want to research it. Google doesn`t integrate at all with Yahoo! store.
Hope this helps