I don't think I even need to point out the irony in the above statement, but I'll make an analogy.The real issue that we see here is that the military is missing out on many potentially excellent pilots because they have problems getting through an aptitude test.
"The real issue that we see here is that the military is missing out on many potentially excellent pilots because they are blind." (Or deaf, or missing an appendage or take your pick.)
As has been stated, the ARCO guide is more than sufficient to prepare for the AFOQT or ASTB. But hey, this is America, and capitalism is a great thing. I have no doubt you guys will make a fortune doing this, but the fact remains that there are a finite number of slots in every service and that number isn't going up because someone comes along and starts manufacturing more qualified candidates.