I registered just to comment on this. Thanks for making it. Even if you don't use magic item shops, these can work wonders to helping a DM keep balance among the players or at least get the results that they intend.

I had a note related to your game changing items, a way I think I've "fixed" them in my games (including the belts of giant strength and all that): I've increased the attunement slots to 4, but I make all permanent items require attunement. If someone wants to stack for AC or stack for Damage, it's possible. It's also helping me to balance TWFing with GWFing, as I'm looking into house rules to do that (where a TWFer can have two magic weapons, a GWFer can have a magic weapon and a belt of giant strength).