That's one I can't help you with. I always look at
www.bestbuyplasma.com for some pricing information. Was dead set on getting a Samsung 4232 plasma from them, then Myer-Emco put the same set on sale for $1,800.00. After shipping it was about the same cost to buy online vs. buy from the brick & mortar store. So, I bought from the store.
I just price shop the heck out of stuff until I find what a decent online price is (with shipping). Then, I would try your local B&M store and see if they will come down to that range. Say, you find it's $3,800.00 shipped. So, how about $3,900 from the B&M in person?