"So, I'll get you a really tricky book, that's kind of like a puzzle! And music too, that's separate." 

"Deal!"

And they arrive at the shop.

Parchment, quills, and various other essentials for every aspiring Hogwarts student. 

Capitalism! Sort of!

Close enough, yes.

The Woods can exchange money for goods.

"How do they make quills?"

"I think they pluck them off animals?"

"Are they careful? Wizards don't seem very careful."

"I dunno, shopkeeper maybe knows?"

So Scott asks (interrogates) the shopkeeper about quills.

The shopkeeper has no idea if any owls are harmed in the making of his inventory, and would advise that talk be taken elsewhere, so as not to scare away business.

"I hope Hogwarts has a really good library."

He giggles. "Professor Flitwick said it's the best, but I think that's because he's a Ravenclaw."

"What's a Ravenclaw?" 

"It's one of the four houses, Scott."

"What does that mean, though. How do you know what Ravenclaws are like?" 

"When Deputy Headmaster Flitwick visited us to tell us about magic he explained it."

"He didn't tell me what Ravenclaws were like! He said my house was important and that sorting was going to be a surprise."

"Well I asked a lot of questions about a lot of things and he was sure I'd be a Ravenclaw and I asked what that was and he gave me a very short description and didn't want to tell me more than that. I know Ravenclaws are the ones who like books, Slytherins are the ones who like plans, Gryffindors are the ones who like throwing themselves at dragons, and Hufflepuffs are the ones who like work."

"I believe you may be glossing over some important details there, dear."

"So I have to be one of those?"

"Apparently, but they're not exactly what Sadde's implying, here."

"I think I'm a Hufflepuff, the others just sound kind of silly." 

"Gryffindors value bravery and chivalry, Ravenclaws value wit and intelligence, Slytherins value cunning and ambition, and Hufflepuffs value loyalty and hard work, if this changes your assessment."

"I think still Hufflepuff. Do Ravenclaws like knowing things, or just figuring things out?"