Look, We don't need to get into a discussion on how expensive the wonderful test tools at Autozone cost. I know you don't want to stand outside for 20 minutes (It really shouldn't take that long anyway if you know what you are doing) You want to sell parts.
This guys came here looking for help diagnosing his car. Your advise was to tell him to go somewhere else. If you don't want to try and help this guy, keep quiet.
I will tell you that this BEAR thing is not any type of be all end all test equiptment. I had some moron at a Murrays try and diagnose my car with one when I trie dto return a bad alternator they sold me. He fooled around for 20 minutes, insisted my car was screwed up and the alternator was fine. The fact of the matter was the alternator they had sold me was defective, I proved that to him by demonstrating that the car functioned perfectly after replacing the alternator with an OEM part. He gave me all the same arguments about how expensive the tool was, and his training on the tool. Don't take this Machine's results as the last word.
Which brings me to the next point. If the guy in the original post is still reading I would advise getting your new alternator from a Ford dealer rather than one of the chain type parts stores, in my experience the price difference was minimal. They typically get their parts from questionable rebuilders who don't replace anymore than a few parts, usually not the regulator, (unless it is a solid failure), which is the common failure. Also FWIW I say a few, supposedly working, SC alternators on e-bay last night for less than $10.