baium / zaken instance doesn't give the full jewel fyi. it gives a broken jewel which you need to enchant from 0 to +10 to trade for a real one. And there's a very low chance of getting the enchants which save from destryoing, or you can buy the normal enchants from the npc instance. The chance of going 9 to + 10 is close to 3 times lower than trying a click of toi 5 at npc.
idk why you have such hate about these instances, because the rewards are only 1 M. tablet, 1 scroll 100% 1 hour and the damaged jewel, sometimes you might get a normal enchant and very rarely the safe enchants. Can be done once a week, i don't see any huge impact for gameplay, just another way of getting magical tablets (which are now very common compared to old 2.0 toi farming nonstop because you can simply buy the box of random skill at the oly npc and try find someone to trade to your desired skill) and a boost xp for a week, nothing to care much about the "filling the Market with baium rings" since the enchanting rate of the damaged jewel is very low.