"How did these items get made if there's no way to learn magic? Are the magicians homeschooling their children and not writing any books? How did you learn?"
"Half this stuff is antiques," says the shopkeep. "Look, asking me a dozen times isn't gonna make the answer more to your liking. I don't have Hogwarts in the basement, deal with it."
"But where do you get the stuff that isn't antique - who made the Avalon itself? - isn't anybody panicking about the medallion supply? -"
"Kid, nobody knows how to make medallions."
"But some people apparently know how to make luck charms and protection amulets!"
"I'm not going to give out my suppliers' personal information. I wouldn't do it even if you weren't annoying."
"There have to be books -"
"Does this look like a library to you?"
"Does it help that I'd be terrible at running the world by myself so you get to be the power behind the throne?"
"Well, yes, in the sense that anything can be improved by adding 'and also May rules the world' to it."
"So I'll be quasi-Evil Overlady, you be the shadowy yet extremely competent vizier, Kanimir can be the court magician..." she thinks about this. "Iunno, probably easier if we just make you empress, I feel like you'd rock a crown way better than shadowy vizier robes. Okay, you be Empress, I'll be a Science Advisor on the grounds that I'm totally going to get a doctorate in biology when I grow up, see if I don't, Kanimir can be court magician slash Emperor Consort, and Jaromira can be the court poet if you can find a use for one, she's actually really good."
"It's true, though," Kanimir says thoughtfully. "And it should have a centerpiece jewel the same color as your scales."
"Lovely. Blue diamond? Sapphire? I don't know my gemstones well enough to have other guesses."
"...You know, is there any particular reason you guys couldn't, like, terraform Mars with magic, take a buncha immigrants from Earth and actually start a kingdom or empire or whatever?"
"We might eventually run into fundamental limitations on magic of some kind. Or die. Other than that, no."
"Considering what we know to be possible I would be surprised if the fundamental limitations of magic prevented us from terraforming Mars. And we were already planning to learn to teleport."
"We probably cannot cast spells on Mars from here, and if I'm going to teleport to Mars I need a space suit, which would be kind of hard to get off the shelf, or a breathing spell, which would be kind of nerve-wracking to test."
"Mars and underwater are two very different environments and have very different sorts of possible help available. I'm not saying I will never set foot on Mars, I'm saying it's slightly complicated."
"Fair enough. And meanwhile you are going to do a ton of magic and I'm going to learn slightly less magic on account of I'm also totally going to get a doctorate in biology and I will totally be your Magic Science consultant. A Magic Science consultant. You are probably also going to need other fields of Science consulted."
"Metaphorical boom. Actually real boom would probably be more fun than being a completely different species and/or dead."
"Tangent, I'm pretty sure the species differences are incomplete, considering that all kinds of critters and also humans can all interbreed if they want to."
"...I'm going to be a biologist. Do you think it would be horribly insensitive to try to study the various kinds of critters on that level?"