Is it worth buying from shop?
 

I havent bought potions from the era shop in awhile. i forgot if lightweight and vitality potions r sold in bulk or individually. anyone know which so i know if its worth buying for 80 gralats

Individually, and they only go for about 2k each so no not worth it, unless you are rich.

ok. thanks. i guess ill have to buy them in game

Anything you can buy with in game money is never worth spending USD(or whatever your currency is) on.
At least that's my opinion.

Then again, nobody buying them for gelats eliminates them from the economy, effectively raising the price over time.

No. i buy all my gelates off of the pirate bay.
that was a joke btw ^
but im using grelates from the superadds thing. and for some reason i cannot find anyone who is selling a vitality potion on the server.