InstantABTesting - Ask a question, See results instantly.
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Though if the price includes comments from each respondent in addition to their choice, that would fill a different need than raw statistical testing, and could maybe still be useful at that price.
If it's just a poll system then I'm a bit leery, as that could easily be feigned.
It's using mechanical turk to present real humans both versions and ask them to answer the question asked by selecting one of the images. It should be a good second opinion but obviously it's not comparable to an actual A/B test on a live website. At that price, you probably can't get cheaper feedback. Considering what average CPCs are for Facebook and Google, this is a pretty good deal.
When you are creating images or deciding between photos to use in your creative, it's a very effective and quick way to get honest, unbias feedback. Try it for yourself.
It's simple and only works in certain use cases where you need more immediate feedback, esp. the polling stuff. However, it definitely has its uses.
Good job, guys!