The magic shop. What are your thoughts?

Do you allow the players in your game to go shop for magic items/superpowered items? And if so, how do you monetize and rationalize the idea that there is a store in town selling magic? The following are my thoughts on the subject. Let me know what you think? Let me know if you allow this and how you go about it?happy holidays

#MagicShops. #TableTopRole-playing #GMTips.