he is right. 3-4K in twenties look alot better when you trying to make a sale than that amount in 100s. Its not till afterwards that you think damn thats a **** load of 20s and the guy is a homo for paying with them instead of 100s.
I personally like it when they pull out the wad of cash and try to give me a lower offer. At least I know we're not going to try to work out a deal, only for them to suddenly pull out a checkbook at the end, or say they'll be back tommorow with the cash. Yeah, they may be trying to lowball you, but more often then not, if they have a wad of cash in one pocket, they have most if not the rest of it in another pocket. They may try the "hey this is all I got, take it or leave it" trick on you, but if they are interested, and you play back, you'll get more money out of them in the end