Do not use Brain Tree Payments because they will reserve your funds without any warnings, and they lie to you on top of it when you call them and tell you, that your funds will be available in 2-3 business days. So you give them more credit card transactions but you won't see this money because they were tricking you of charging more transactions so they can hold more of your funds. If you have one time problem with a small transaction they were trying to debit and does not go thru you would be in BIG TROUBLE.
The only reason why I gave them 2 stars instead of one is because their website braintreepayments.com is actually easy to use. But unfortunately they cannot be trusted with your money