I will find out. Please PM me (if possible) any kind of bank statement where it is shown.
There have been 2 cases like this and I think its a currency conversion thing. I will check it out with Braintree. Any overcharge will be refunded
EDIT: found the problem. Another plugin issue. We had a plugin to show the currency correctly based on location (note: this only affected $ users, not € or £). On this side it shows everything correctly, but the credit card conversion was still done in EUR.
We have fixed that problem now!
@torbuntu and @RichardAmes were the only buyers who were affected. You will be refunded 20.6% as per the EUR/USD exchange rate that was used at the time
@torbuntu : thanks for reporting this issue and we were able to catch it quickly