The selling and buying back of items that cost less than they sell for, IMO, isn't a "cheat"...at least, not the same type as the Inn Gold Bug cheat. Normally I'm against cheating of any form, but as ridiculously dependent as this game is on exorbitant amounts of gold to do anything, I say do what you can.
And a big happy birthday to you, Dr. Orangutan!
-Sazerac