Percentage fee based on selling price. See my previous review. There is no doubt that they're attractive and can be placed in areas where others simply can't go. So for those who want a small attractive HT sub., and don't care too much about overall performance, it's a viable consideration. But if you do care more about performance and have the room for a larger sub., then the P3's are not for you.
Ratings are for overall performance and what can be had for the money.
Read the review. And you WILL get close enough to make that neighbor second-guess the worth of his megabuck investment, once he hears what YOU'RE getting and how much you paid for it. Some with larger rooms who need a sub. Well to do all of the above in any lone product is nearly impossible, but from the listed world-class budget contenders, there's but one that tries to do it all and you guessed it, it's the Athena Technologies' P3. Frankly, before Sam's review I would've relayed something very similar, but now my proposed solution was clear and all I had to do was find it.