I don't see it as a big hassle personally to at least clean glass before I take pics to put it up for sale... There have been a few items I'll be interested in but the only pics the owner put up looks like they just put a half zip through it. A clean bong is a tobacco pipe, a dirty resonated bong is paraphernalia. you guys aren't shipping pieces covered in resin are you?
is it that hard to splash some iso/salt into your glass....