"Ah, Mister Saotome, punctual. You wouldn't believe how rare that is," said the wizard.
"I guess," said Ranma, looking around. "You fit all this into a phone booth?"
The wizard shrugged. "Got the idea off a British TV show. Thought it had possibilities. Still working on the steering. Still end up with some people wandering in despite the locks. Let me go ahead and lock it anyway and then I'll show you where we'll try the curse-removal."
"What's in it for you, anyway?" asked Ranma, that bit bothering him.
"Hmmm?" The Wizard paused after clicking a perfectly mundane deadbolt in the door. "Well. I've done a few transformation spells in my day, you know. The Jusenkyo one though - keeps transforming you. I'm familiar with curses that transform you based on the cycle of the moon, or have a day versus night trigger. Most transformations though are a one-shot deal. I cast a spell that turns an intruder into a pink bunny, then that's it - they are now a cute little pink bunny rabbit. Doing it so that they only turn bunny when the sun goes down - much trickier."
"So it's kinda a professional curiosity thing?" asked Ranma. It was like running into a variant of a martial arts manuever he'd never seen before, he'd be curious enough to want to see what was involved and all.
"Mostly," agreed the wizard, going to a second door and opening it - then proceeding down the stairs. "Being a high-level wizard is like being some professor of an esoteric science in some ways. We also have our professional journals and papers, our little get-togethers and attempts to one-up each other with our cleverness and accomplishments."