Thanks for checking out the quest!
The short of it is that I'm lazy.
The long of it is that this was supposed to be a temporary thing. At the time development on the regular shop was being done to make all items always available. However it was running into some difficulty so I made this quest in order to appease the mag farming community while the shop was getting all worked out. This community mostly created rooms to afk in, and so I didn't see the point in building out Regal (quests don't come preloaded with enemies \ objects, they all have to be added by the developer). Now comes in the lazy part; I always meant to go back and redo Lemon's Shop. Mainly I wanted to do something with the girl in the telepipe zone where you could give her a lvl 0 mag for a prize. However this ended up being more work and I anticipated, and my love for pso kinda died out before I ever figured that out.
If you are interested in doing this work yourself, you can PM me and I'll send you the quest file to edit.