Sloooooow blink.

"... So if I were to pay you in, Takkarash, what would happen...?"

"You would experience pain of an intensity proportionate to the price of your purchase. I recommend against minting more than perhaps a thousand Takkarash at once, even if you enjoy pain. If you don't, I would recommend keeping it down to a two-digit number."

Nod. "I see. And if I were to buy Takkarash? Or is it only available as payment?"

"Then you would receive a shield against pain in your future, or anesthetic for pain that you were currently experiencing. Possibly in the form of a physical coin."

"And similarly I could sell or buy the others. ... What do you typically accept as trade, aside from the standard currencies? Or is that another 'it's easier to say what we don't'?"

"Basically, yes. We do purchase services, but again do not purchase sophonts. I can valuate almost anything you care to name."

"Mm. What are examples of things that are valued highly?"

"Magic that the OTC has had little prior contact with. Physical objects that are multiversally rare - which generally means manufactured objects, though you should probably list the common materials in your world in case one of them turns out to be rare in the multiverse at large. Skilled services are valuable regardless of the field of study - you would be surprised at the mileage you can get out of being a successful author, on some worlds. Unique experiences in general - worlds with interesting weather are in vogue this century. And so on, and so on. Basically, ask about anything you think might be valuable."

Pensive nod. "I'll keep that in mind."

"... Not interested? That's unusual."

"Not necessarily not interested, but I think I'd like to see what this place has to offer along with the slightly terrifying money types before throwing ideas for what I could sell around."

"I should have an abridged catalog of our recent best-sellers around here somewhere... Ah, here it is."

The clerk pushes a heavy tablet of black stone across the glass counter towards Inavet.

"Sorry about the format."

She raises an eyebrow at the heavy tablet, but says, "It's quite all right."

She gets to reading it! How does it work?

Poking confirms that it's a touch-sensitive tablet. Lines of incised letters slide back and forth, displaying a rather extensive spreadsheet.

This is fairly familiar territory to her! Sort of.

What's on the spreadsheet? Anything good for overthrowing an oppressive totalitarian magically empowered government that controls the climate, the populace, and all information ever?

There's a truly impressive array of weaponry and mercenary services, some of which's stated capabilities are absolutely absurd. There are also umpteen different methods of information gathering and propaganda dissemination. Weather control is rarer, but there's still a section with a good half-dozen options.

....

She likes these options. Many of them are expensive, however.

"How common is it to get doors to - here?"

How many trips can she do this in does she have to get what she needs in this one trip or...?

"We're just moving into this universe, but I can give you my card and that should let you call a new door whenever and wherever you like."

"That would be wonderful," she says, blinking. "... Just moving into this universe? What does that mean? Are other people going to get doors, too?"

"Oh, probably. Whenever I get around to it."

Pause.

"Could you take a while to get around to it?"

"Um, maybe? I mean, my superiors will eventually get annoyed with me if I'm not making sales."

"I," says Inavet, "will be sure to get you a lot of business."

"Then sure, probably!"

"Excellent, thank you."