Will they haggle?

If you go to a store like Best Buy to buy a TV, are the sales people allowed to haggle over price?
If I tell them that I'm in no hurry to buy a TV, and that I'm willing to wait for several more months, and maybe go to a different store, do you think that I could get them to drop say $50 off the price of a $750 TV if I buy it right now?
If I tell them that I'm in no hurry to buy a TV, and that I'm willing to wait for several more months, and maybe go to a different store, do you think that I could get them to drop say $50 off the price of a $750 TV if I buy it right now?