Speaking of tips, here’s one: When a guy asks for an unreasonable discount, just reply that, sorry, it isn’t possible. That’s all you need to do. Trying to school him with a comparison like your shopping-in-a-store analogy or suggesting he go back to other providers from his past is unprofessional. The table gets turned: It reflects poorly on you, when he’s the unfortunate one with the issue. 😉