Yes.
:]
I love this sort of stuff to be honest.
Make sure to pay attention to key ingredients though and do your research, because there are some things consistently recommended that will naturally boost your testosterone levels.
A lot of this stuff also works better with people who work out as well, so as long as that's in your regimen, I'd say something like this isn't a bad investment. Some of the tribulus terrestris anti-aromatase complexes (which would block counteractive estrogen - I think this is important for us) are really good - also cheaper than this product. I personally have no input as to whether or not you should get this particular product because it lists none of the active ingredients in nutrition facts and just lists it as "The Ultimate Underground Testosterone Boosting Complex". Kind of iffy to me for something so expensive.
You might want to also look at
bodybuilding.com and
prosource.net. They tend to sell more of the products you're looking for than GNC does - even though I do like GNC as well, it's not the place to purchase testosterone boosters in my opinion.
Hopefully this is helpful to you. I am really into this sort of stuff.
Lulz.

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Nonetheless, please remember a lot of these supplements are usually geared towards athletes though and are not meant to act as a substitute for actual testosterone.