A script api that brings creating shops to ease
buy([item], [amount], %player%)
#Checks for the requested %player% balance.
#Gives the [item] to %player% with the [amount] provided.
Sell("single", [item], [price], %player%)
#Sells a single piece of [item] and adding [price] to %player% balance.
Sell("all", [item], [price], %player%)
#Sells all of [item] in %player% inventory and adding [price] to their balance.