I'll be honest, this and some of other .com sales you have posted in the past, i'd never even dream of registering them as i just can't see the value. What value did you see at the time to encourage you to actually register it?
This is not a criticism by the way, obviously you can see value where I can't within the .com market! I don't really dabble in the .com space for this reason.
Well done on the sale.