You could also talk to your DM about it, but sometimes it just isn't worth the energy.
If you want a book full of magic shops and items, check out The Seekers Guide to Enchanting Emporiums! https://ghostfiregaming.com/XPT3_ELEE_2023_10_030
Merch, Discord, the Quest-O-Nomicon, and everything else: https://linktr.ee/XPtoLevel3