Wow, I kept going back to the shop to see if I could catch a potion, and it apparently just restocked not long ago. I've already missed the potions. :( Maybe next time, if there is another one.
OMG I was actually on when the TS RS? Wow. Need the aqua potion for a new blob but the vibrant potion is worth more. Ended up getting the hair instead. Hope I can get a potion with the next RS.