I'd be hesitant on that one, or any prediction software, without the backing of the price guarantee like Google has. Otherwise you're really just gambling.

I used to use whatever flight prediction software Bing bought out when I traveled for work. It was pretty accurate most of the time, and I got used to trusting it, but I definitely got burned really badly a few times by continuing to wait as the price sky rocketed under the algorithms assurance that it would drop again before I needed to pull the trigger.