Not off base at all.
It seems to me that the trend lately has been that "cleaned/refinished/refurbished" sell for more money than an original knife with some "neighborhood" and use. Doesn't make any sense to me.
I used to buy and sell a LOT of guns. Re-blued and re-finished guns were looked down upon and usually brought less money than a well taken care of gun with some honest wear. I'm out of the loop in that business nowadays as I haven't bought a gun in over ten years, new or used.
Personally, unless I intend to use a knife and can get it cheap enough to warrant it, I will pass on any knife that has been pimped out and tarted up to make it look pretty. I've got a few in my stash that have been "cleaned" in my stuff, BUT I didn't buy them knowingly or because they had been messed with (cleaned).
I've rescued a few old beaters from the rust pile and have no problem with anyone that does that. IF you have an old knife that is being eaten up with rust, then HELL YES, get it back to usable condition. Taking one in that condition and grinding the blades to remove all the pits and then representing it as something else in order to profit, is, in my opinion, just wrong.
Member of The West Texas Chapter Of Gun Ownin', Pickup Truck Drivin', Jingoistic, Right Wing, History Changin', Huge Carbon Footprint Leavin' Conspirators.