@MokeleMbembe Well look at it this way, how do you think they survived so long? After living for a few years in an apocalyptic zone anyone would eventually become very aware and adept at combat.
it needs a "you already bought this" price just set a variable and have it so when you buy the gold it equals one saph 2 etc... and then if variable = 1,2,3,4... depending on item then show price as "purchased" or similar it would be nicer if the option for the next best availble upgrade was automatically highlighted when you open the store too