What I would do for bandit clothing and such is maybe making it a chance drop when you beat the corresponding enemy.
But the problem with it would likely make the game more complex and overall it might be unnecessary as a shop or something along the lines of that would likely be simpler and overall easier to access
sorry for the late reply, for the outfits to not be lost but to also make em a little unique, make it so that there's one area where they'll spawn normally (wherever you feel like they should be found at) and then make it so if the whole set is lost (or respawn the piece that's no longer around whichever is easier to program) respawn. also to avoid a way for infinate money, make them worth damn near nothing so it'll be a very, VERY slow money method if they try it and it'd also make people less likely to chuck em anyway.
This way will also make it so you're not adding 2million options into shops and give it more feel for some of these "themematic clothing"
