Yes, I've noticed it too.
There's people on there selling stuff which is practically worthless, yet dressing it up as being rare and one of a kind. There's a copy of Carrier Command on there at the moment as a BIN, which has been there for a couple of months now. It just *might* be of interest to me if it included the cassette AND especially the badge.
I have here The Magenetic Scrolls collection sitting in my crate, amongst a few other things.
Then there's other items on eBay that you would expect to go for alot, yet are going for practically nothing.
EPROMs are another one. Seller's not knowing what they're selling and marking everything as rare. You can buy the things brand new!! On the subject of EPROMs atm, the UK prices are just totally silly. USA prices are more sensible for 2nd's. In the end I just bought the things new. As I did buy a batch of OTP PROMs off of eBay and they were ALREADY PROGRAMMED!! despite being blank.
Not quite sure what's happening to eBay atm. There are vintage categories that were previously brimming with finds, which are now either empty or full of traders selling items in the wrong categories (deliberately).
As a suggestion, it would be a HUGE advantage if there was a bolt on for the PHP forum (which Atari-Forum uses) which added some form of auction listing. There's not many of us...
The thing that I find SO DISAPPOINTING is the little sellers who are going to the trouble of putting their kit up (which we want), and it's practically going unnoticed. I think that the past years of all of the little trinkets and bits of obscure junk being listed en-mass is diminishing.