To each his own Jerry...
"The "cleaning hurts value" school of thought in chipping, in my book, is way overrated. I have seen too many sales examples of cleaned chips outselling dirty ones to even consider it anymore." ... Jerry Canzoneri
Personally, I would prefer to buy the dirty chip at a much cheaper price and clean it myself if I desired to. Why would a cleaned chip command a premium price over a dirty one since we all agree that cleaning does not improve grade ... it only has a nicer asthetic appearance.
My unsolicited advice is; ... save the few bucks ... buy the dirty one ... and clean your own chips if you must.... but don't pay extra for someone else chip wash.
To Mr. Hanover ... quote that line next time you wish to take my comments out of context.
My one and a half cents... 
