i ordered a wheelset from the bicyclewheels.com guys about a year ago and they sent me two wheelsets by accident - when i called to let them know, the poor guy on the other end sounded pretty damn thankful to know what happened to "the missing wheels" - they paid for shipping back and i definitely felt better than i would have just keeping them. glad things worked out for you too...

edit: on the other hand, that time bens cyclery sent me some extra ****...