Beyond simply buying items, advanced shop management involves strategic rerolling and item selling. Don't be afraid to reroll if the shop offers nothing useful, especially in early waves when reroll costs are low. Sometimes, selling a low-tier weapon to afford a powerful legendary item is a smart move, even if it leaves you with fewer weapons temporarily. Pay attention to item synergies; sometimes a seemingly weak item can become incredibly powerful when combined with others. Always consider your character's specific needs and bonuses when making shop decisions.
