One last request before you go

"I have done a lot of research on these types of things, to help my sister out with her abilities," replies Catrya, giving a half-truth mixed in with the lies. "I know getting the real deal is very hard to do, so I'm not upset. I just want to make sure you don't have any disappointed customers." As she says "customers", she squeezes your ass cheek for emphasis, making you yelp in agreement.

"Well, uh, thank you, I guess?" the shopkeeper confusedly responds to the help. He puts his wares back in place as the two of you mill around the shop, browsing more of the potions up for sale.

Catrya stops you when she sees a large, spherical flask half-full with a gross-looking brown liquid. The top half of the flask is also tainted brown, with thick vapors filling the space and precipitating off the glass in thick droplets, making long streaks as they fall back into the bottom half. A rubber stopper tops this flask as well, but to make extra sure it stays closed it is held in place by a wire cage. She gently scratches one of her immaculately-manicured fingernails down the glass, following one of the condensed droplets down the top half of the flask. Not taking her eyes off the flask, she asks, "Is this-"

"Brimstone potion, undiluted!" the shopkeeper interrupts, his previous dejected demeanor comply gone at the prospect of again selling you something. "I hope you understand, I cannot let you unstop this flask to sample."

"Of course," Catrya replies. "I'll take your word for it. It looks very potent. I would like to buy the whole flask."

The shopkeeper's eyes go wide. "Are you sure you can afford that?" he asks.

"Well I don't have any cash on me," Catrya responds coyly. The shopkeeper's face drops at her statement, but perks back up at the follow-up. "But... I could offer you a trade for it?"