Went to Best Buy three months ago and here's what I found in regards to their prices for mounting bracket and installation for my already bought 46" LED TV:
$300 installation of mounting bracket
$180 full motion mounting bracket (specific to my needs)
Total: $480 w/out tax
Interestingly enough, Best Buy told me that installation and bracket usually ran between $500 and $700 depending on the bracket, but that this was essentially universal across Phoenix.
Here's what I did:
1. Bought Sanus TV mount from Costco at $98 w/out tax
2. Called Joe and his partner - $100 for installation for a small living room
Total: $198
Savings: Almost $300-$500 in comparison to Best Buy
But what about the service? Five-Star Fantastic. Completely trustworthy, great at small talk, and was able to get the job done within an hour and a half. Only regret: Having Joe and his partner come over when my wife was home...otherwise I would have said I had done it myself.
Can't go wrong on this one, yelpers.