How much is the family discount for dodge?

My grandpa reitred from Dodge, and I was wondering if anyone knows how much the discount is off a new Dodge. I think its the invoice price but I am not sure. If anyone knows anything I would appericate it.|||it depends on the car my father in law is a chrysler retiree i bought a 05 rumble bee truck for 22500 out the door it had a sticker of 39786 i bought a caliber and only saved 1500 bucks the general rule is 10% off of sticker dealers can work a little more if they want also there are different rebates avaible|||now days you can probably get a better deal just wait a month or 2 the 2008 models are coming out and they will be trying to get of what 2007 that left.