active.com Shady business practices. Extra processing fees. Internet

My girlfriend and I wanted to run the LA marathon (where we live). So we trained and signed up together. The cost of the event was $145. What was surprising to me was the ~$15 (approx) processing fee ($145 doesn't cover everything?). Furthermore, we signed up together - so after she signed up, it showed us the cost and asked us if we were finished or did we want to sign up another. We chose to sign up another and when we were done, we ended up paying two processing fees (about $30 total in processing fees) even though we signed up at the same time in the same session with the same credit card. Of course, there is no explanation for what the processing fees go to. There is, however, the explanation that Active.com is a shady profit-centric commercial organization. I'm going to avoid active.com at all costs. I'd rather donate my money to charity.