It also depends on the size. Larger hats always command higher prices. 7-1/8 and less is a harder sell.
I’ve never paid more than 40-50% for a used custom on eBay. But an old no longer used color like the old dye black cherry would bring more.
John Lofgren Monkey Boots Shinki Horsebuttt - $1,136 The classic monkey boot silhouette in an incredibly rich Shinki russet horse leather. 
Grant Stone Diesel Boot Dark Olive Chromexcel - $395 Goodyear welted, Horween Chromexcel, classic good looks. 
Schott 568 Vandals Jacket - $1,250 The classic Perfecto motorcycle jacket, in a very special limited-edition Schott double rider style. 
I have a passing interest but I have not tracked pricing of custom hats on Ebay very closely. But at least anecdotally I would say 1/2 of original price is good approximation unless the hat comes from a very noted hatter and even then not likely to sell for much better than 1/2 price.
Max, I just responded to your messages. I happy to see you got this one. It's not super high end but it's true to the time period and place. Also great that it's time stamped. It's very difficult to find old German Soft Felts so congrats. Paddy the seller use to post here but I haven't seen him in a while.
Thank you, Steven!
Very cool find, Max. These oldies don't show up all that often.
Nice looking Mallory. Cavanagh edge and all. Worth taking a shot at.
Looks like one made under the American license. Not on par with the early French ones.
