Yes they are louder, but they emit different frequencies. Air whooshing around is a lot more annoying than the hum of a hard drive. Hmm...whats more annoying, a mini vacuum next to your ear or the constant hum of a hard drive. Don't tell me hard drive seeking will just always drown out the fan noise, because its a totally different frequency as well. Not to mention seeking is only temporary and it is almost comforting in the sense that "Hey my PC is doing something at my request." Also, when you need your PC to be quiet, such as when you're watching a movie, the hard drive isnt seeking.
Just because a hard drive is louder than a fan doesn't mean you won't be able to hear the fan(s). They emit totally different frequencies and the hard drive frequency is very easy to tune out since it is soft "crisp" and high pitched. Fans however sound like a "woosh" and are very hard to tune out; they emit frequencies in a further range than hard drives (the motor itself and then the air wooshing around).
Don't say this isnt a deal just because you're not interested. A deal is defined as something that is significantly lower than usual price. This is around 60% of the normal price, which is definitly a good deal. You can stop crapping this thread now...go play with your vacuum aka tornado.