Or how do they stack up in the marketplace?

Since rejoining the ANA back in 2007, I have taken advantage of the direct submission privileges on several occasions. NGC has returned several of my pre-modern commemorative halves with Details (AU or UNC) for "Improperly Cleaned". You can check my registry to see which ones.

My question is how do these Details coins trade in the marketplace? I noticed that a lot of sellers on Ebay try to minimize the impact by glossing over the Details designation and focusing on the UNC, for instance, with pricing at the low end of the UNC scale on BIN sales. I purchased a Details graded 1918 Mercury Dime as a filler and paid, what I consider, about 50% of normal price for the attributed grade. Very few seller seem to auction Details graded coins on Ebay, BIN is definitely the preferred method.

I am thinking Details coins, at the AU/UNC level are going to sell at something like 1/2 to 3/4 of a non-Details coin with the better coins, like a 09-S VDB, selling for closer to the AU50/MS60 price than a more common date.

Thoughts anyone??