Quote Originally Posted by Ursus the Grim View Post
By RAW, most magic marts wouldn't exist, at least not at higher levels of play. Short of going to a metropolis (truly rare in most cases), there is a GP limit that most groups unfortunately handwave away.
Except there is a cannon plane of existence in both Core and an WotC-official campaign setting that acts as a magic market (the Outlands in Core, and I don't pay enough attention to FR to know the name of the plane, but I'm fairly sure Faerun itself has numerous metropolis-level cities given that one has an entire splatbook devoted to it).