Hello All. First post....questions about buying.

I just flund this site a few days ago and all I can say is WOW!! The ideas and the craftsmanship folks on here display are amazing. I am in the planning stages and your posts have taken me in a whole new direction and got me really excited about starting my project to boot. I'm sure I will have plenty of questions as it unfolds.
Question one: I'm ready to buy and have contacted a few dealerships..just need to pull the trigger. My question: are dealership prices pretty well set or is it the norm to negotiate as in buying a car/ truck and if so how much of a discount could I expect with a little haggling?
Question two: Any opinions on Trailer Showroom? I live fairly near their Texas facilities.
Thanks!
Bobby T
Question one: I'm ready to buy and have contacted a few dealerships..just need to pull the trigger. My question: are dealership prices pretty well set or is it the norm to negotiate as in buying a car/ truck and if so how much of a discount could I expect with a little haggling?
Question two: Any opinions on Trailer Showroom? I live fairly near their Texas facilities.
Thanks!
Bobby T