Oh, don't. They're the worst. I was discussing those types with my supplier yesterday. They come on and try anything to get money knocked off.
"I'll be having a Server"
"I'm looking to buy ten of them."
"I've got a large IT project coming up."
Then when you knock a good chunk off, suddenly the server goes poof, they only want one for the minute and the project has now mysteriously disappeared. I had one the other day, never heard from him before, the first thing he asked: "How much if I buy three and how much if I buy five?" I told him we were not a supermarket and we don't do "Buy two get a third half price." Guess what, he didn't buy anything. There's a surprise.