0%. I don't need a discount to buy high-quality hardware that I need. Oh, wait, do you mean "what's the minimal discount I can offer to make you impulse buy so

0%. I don't need a discount to buy high-quality hardware that I need. Oh, wait, do you mean "what's the minimal discount I can offer to make you impulse buy something you don't actually need and that might not be as good as the alternative"?