I put quite some work into the store system in Foxquest ^^
Of course you can go to the sellswoman directly and buy stuff from her, but i really disliked the idea that the stuff is laying around on the tables all the time and you can't interact with it.
So i tried around a bit until i was able to create this system~

(This is an old screenshot from a version where i hadn't Yanfly's Message Core Plugin installed)