I don't see any reason why it would not be honored. I personally bought my Samsung HLS-6187 DLP from Best Buy on a price match for F-r-y's. The stores are within about 15 miles or so of each other. F-r-y's was actually only about 1.3 miles from my home. There was a Best Buy within the same distance, but they didn't have the tv in stock. BB Called F-r-y's to verify that it was in stock, and met the price.
I wanted to get it from BB because with the price match, I could get both the tv and the service plan for less than the price of the tv alone. I just had the bulb replaced under the service plan about five weeks ago.
I haven't had any problems with BB on a price match ever. Whether it was the $2500 television for $1800, or an X-Box 360 controller on sale at a big blue roll back store for $35, they did it.