Well, there's a module to provide such integration. I myself haven't tried it so far, but I know for a fact that it works and others are using it. You can find it here . Let me know if this helps you.

Thank you. I have visited the link. That is what I want. I will test the module at once.

Well, apparently now they're having some more problems with MasterCard. I guess they're experiencing some sort of "growing pains". I just hope they'll grow up real fast and all of this issues will become a thing of the past. I'm sticking with them to see that become a reality!

paypal is decent but good luck getting your money back if you get ripped off from someone who you pay via paypal
2-3% is not bad at all this is right in line with what you would expect to pay if you got a merchant account and accepted visa/mastercards directly (aka there discount fee)