I would still list them for sale or trade. I've done much better trading lately to get what I want. The price of used guns has been high lately but trades for me have been closer to true value. As for the 500a clean what you can but I wouldn't put much in it, like I said someone might want it for a project or camp gun.
Keep up with the trends, avoid the fads, take your time and do work you can be proud of always