CL = Craigslist
A good rule of thumb would be $2 or less per gallon new for glass tanks. So a 29G should be about $60 new, for just the tank.
For used tanks off Craigslist, $1 per gallon or less is fair. A used glass 29G should really only go for about $20 for a good deal, and that would be in very good condition with no cracks, mineral deposits on the glass, or big scratches.
The hood, heater, filter, etc. that come in package deals can be pretty good quality, but it might be worth reading some brand reviews and buying those separately.
Definitely, the pre-packaged filters tend to lag in quality. They can be adequate, but it's like, why not shop a little, spend a few more dollars, and get a really good filter instead of something that is just adequate?
Just as an example, for the money, you could get a plastic hood and some low-end bulbs in the package, or . . . buy an inexpensive lamp from Target or Wal-Mart, a higher-rated flourescent bulb, and a timer, and have custom lighting that would look a little nicer and give more light.
Same thing for the stand . . . don't buy a stand from the stores. They're just really cheaply made, priced way too high, and not that great. It would be better to shop around for a sturdy used dresser or make a stand yourself.