Novels that have point shops that give abilities or upgrade stats. Can be exclusive to MC or be available to all characters. I would prefer for the MC to have extra knowledge or know how to use the shop for the most potential. A good example would be: Reborn Apocalypse on RRL
tbh I never really get how the MC is supposed to have 'special knowledge' about how to use a shop. just take 5 min and you can probably think of better ways than the author. I hate how that makes everyone else so dumb in stories but yeah, I second Shovels in Spades and basically half the system novels.