I manage to sell a fair amount of HQ mega hp potions but nothing higher than that. Everything else I sell from it is lvl 30 or below. Horn glue, crab oil, fish glue, natron, clear glass lenses, basically all the things other crafters need.

With my goldsmith I am almost completely stat capped with 359 craftsmanship, 351 control, and 345 cp without food and I'm still looking to finish off the last item because the stats help. With alch I haven't even bothered to socket half the gear in the 100% materia slots because I never need to make anything above lvl 43. It's such an utterly disappointing craft because there are so many possibilities for fun and useful pots.