First off, it seems like VMP's $599 power pack is a great deal. However, I don't see the incentive of buying the three components together, when they're about the same price sepately: Tuner 399 Intake 99 Muffler 79 Total $577
How much is shipping on the three? I can't imagine it is much more than the price difference.
Shipping can be anywhere from $20-$40 for those parts depending on zip code, mufflers are not light.
If you don't feel its a good deal, why post, or why buy? just to start trouble? You are free to make your own choices. If you happen to have a friend with a GT that has stock mufflers laying around it will be much cheaper than my option.