Making an offer question

Good old fashioned telephone. Find the brand & model you want and write down the information including all options. Check the internet for dealers in your state (or even further away) that sell that brand. Start making phone calls asking if they have that model. If they have it ask for their best price. After getting their price tell them thanks and you will get back to them after calling other dealers for prices. Odds are they will tell you to call them back if you get a better price. Eventually it will come down to extra options added so you know you are comparing apples to apples.