I purchased a small air cleaner that was damaged in shipping (filter was pierced). A small detail that lots of other places would have been too much of a hassle to deal with.
Utter Guys didn't have any filters in stock.
So they ordered one, and sent it to me.
I know it doesn't seem remarkable, but I assure you that in this day and age, companies that do what they say they will are rare. I was impressed.