This is the background.
In that thread it was suggested to have a perma-stocked showroom. Since I personally didn´t like that idea, but I still would like to make this game "easier" for new players... Here´s my two cents:
Use an excisting system to make it easier to camp.
Buffs!
Some kind of buff that increase items shopchance for X amount of refreashes.
How this would work practiclly, I have no idea. I´m no programmer.