Decided to buy a second Cab 1 L remote, which was on sale, from ModeTrainStuff. Got through the process on-line to the point of payment, got distracted, and didn't finish the purchase. Started over the next day and ordered the thing. In the time before I actually got it ordered, an email came from them, that I didn't see, saying something like, "Hey, you didn't finish your order process. Finish up and we will give you an additional $10 off." I send back and told them I had already gotten the purchase completed and on the way and it was my fault. Their response was to credit my account anyway.
Kudos to a class operation! I knew it already, but thought it would be worth mentioning again.