The most expensive pet I have, is Aurianne. I've spent a FORTUNE on her. Her colour (glacier) was affordable, but sheesh. Those TC items. I've never spent that much before. I didn't total it up, but she depleted my bank and I haven't bothered getting any more CSC to make up for it.

Bucky is my most expensive pet but he's all worth it ❤️ (I spend more than 10k CSC and I'm not done yet).

I've spent the most on Midnight, easily. Between training, reading, feeding, and her TC. No idea how much, but I know it's not as much as many other people. Also I've bought more nightmare potions than I'm willing to admit due to accidentally morphing her LOL :(