The cost is based on a per unit basis and goes down the more units said manufacture agrees to produce. If you want to carry the THX mark on a handful of pieces, it's far more then 5 bucks. On top of that you then pay for what level of certification you are claiming...................claiming being the key word! My Denon 3805 is a great example. It's reported power per the THX standard and it's actual power are to different animals all together. It started out as a great idea but now it's not much more then a cash grab.

I guess my thoughts are if it's so great and so stringent a standard how come more and more equipment is carrying the logo that shouldn't be?

Secrets of Home Theater & HIFI has long been on THX's back over the apparent ease at getting stuff certified.