It's a fantasy role-playing game.

DM: You are Taryon Darrington, a human artificer . You are the member of the famous group of adventurers. Previously, They go inside, finding the shop to be run by one Cydric Gillsman, who recognizes Grog. He only agrees to do business once Grog has assured him Vex isn't around.
DM: "No, I'm waiting on-- Trade's been a little slow. Looks like things are getting up in Emon, so hopefully we'll have more soon. But for the time being, I do have some more healing potions." And he goes into the back room, and you hear him rummaging for a minute. You hear one crate fall over and a couple of things shatter. "Ah god damn--". And eventually he comes back through the door, and he's holding in his arms a few clusters of various glass vials. Some of them have been repurposed and taped at the top, but they're functional. He sets them down on the counter. "All right. I have six potions of healing, and I have three of greater healing, and one superior."
Player: Do I know how much these things tend to cost?
DM: Make an intelligence check.
Player: Ooh! This is not a save.
DM: Yes, just add your modifier.
Player: 20!
DM: Yes, actually. The healing potions can range around 75 to 100 gold pieces generally. The uncommon ones can range somewhere in the 500 gold pieces range. The superior, however, are much rarer to come by, and the fact he even has one, with how recently you guys cleared him out, it's pretty decent. That one can run anywhere between 4,000-5,000 gold pieces.
Player: And it's six, three, and one? Is that right?
DM: Six, three, and one.
