^ It happened to me, too, with a retailer in another hobby - a well known one with a very, very good reputation, like Rallitek/IPD.
In that case (TAD Gear), my credit-card actually showed fraudulent charges, but the bank caught it before any of them went through, and refunded the money in just hours.
I've shopped online since there was an online, so I don't really think too much about such instances. It really can happen to anyone.
Just have to have fail-safes and guards in-place.
In this case, I'm glad that IPD/Rallitek's database wasn't hacked or otherwise misused, and that it was a simple and honest mistake.