Haz:
You're clearly not going with the right people. What you need is someone who can show you how to lay down the law and FORCE them to sell at your price.
Once, I had this grasshopper along who needed to be shown the way. He watched me drill some poor Chicom out of a dollar for a tie. Said grasshopper then went across the way and held firm on his price for a $5.00 pair of Chuck Taylors, after seeing some effective brokering techniques. He was nervous thinking they wouldn't deal, but they did and I was VERY proud...tears through smiles all the way back. I bought him an ice cream cone as a reward!
WM