I've seen that is around 21 mill, but the is cheaper: around 16 mill. Is it still an option to go to the glade and fill the pitcher?

Edit: and if it's open, at what time? I've visited it quite a few times during my daytime, but I can't find it open. Is it 8 AM/PM EST?

I think EST is the same time as Subeta's clock, so it should be that time. You can still fill the pitcher at the glade to make the potion (you can fill other bottles as well but they turn your pet into that experiment).

Thank you! I didn't notice the clock at the top of the screen before, derp~

Subeta Standard Time is currently Greenwich Mean Time -4 hours.