I've posted that in the chat, but I am reporting it here for a better visibility. It seems that the shop has a very quick kill ratio when it receives an influx of items; by quick I mean minutes; it also kills items without attention to their quality.
I just saw in the shop that somebody has unloaded a large quantity (3-4 dozen) of staffs, including at least two Kataloxes (one Fine). I copied their links for discussion, and by the time I have finished writing the post and went back to look at them the second time, they were gone (links are
here). As they are "gone", it means that they were not bought by any player, but rather recycled by the shop.
Killing off a Fine Katalox Staff just doesn't seem right to me; this drastically reduces the chances of players to buy them. I'd think this is quite close to a bug, or unintended but real annoyance and I'd strongly suggest that a quickfix is introduced, at the very least giving items a minimum 24h-length period of stay in the shop, and if possible, giving high quality items a longer chance to stay in it then the garbage ones.