A question for those of you who deal with KEH...

I like KEH and have ordered a number of things from them and have always been very pleased with what I receive. I have never though ordered anything rated as UG (ugly). The bargain equipment I have received has always been very clean, what I would call excellent. How about ugly though? Anyone have experience with what the ugly condition really is? I'm considering a lens they have but I'm not sure.

Thanks a lot,