It depends on the set, but my Dad is a sound technician, and works for a company that gets amazing deals from the dealers. He can get all kinds of **noel** A/V wise for really good prices.
when recording drums, it is essential to have a mic that is rated to pick up those lower frequencies. If you were to buy one microhpone to improve your recordings, I would suggest a kick mic. Especially if you're only using one overhead mic. That overhead might be able to pick up the dynamics of the entire kit, sans the kick pretty well, but you really do need a mic rated for a kick drum to get those dynamics. I say the kick drum is easy the most dynamic as well. Depending on the sound you're going for, you want a certain level of that clicky sound to come through to really accentuate the attack on the kick, but you also want to capture the low end well. Then you have all kinds of different low ends... springy and wide, or deep and throaty. It's such a great instrument. I digress, you need to have a kick drum mic to record drums minimally well. Your ears are picking up on all the dynamics of the room, whereas mics have various frequency responses. So certain mics will only pick up certain frequencies.
I bought my kit for $300 used, and it came with Sabian B8s. I literally played those cymbals into the grave. There's no telling how much money I've put into the kit since I first got it. From heads to hardware, probably thousands of dollars, not including the mics I got for Christmas. The cymbals I'm playing now are 13" Zildjian A Custom hats, 21" Zildjian A Sweet Ride for my right crash, and a 18" Paiste PST5 Medium Crash for my left crash. I'm looking at replacing the Paiste with the sweet ride and replacing the sweet ride with a 22" Zildjian A Medium Ride. The snare drum I'm playing now is a 13x5.5" Mapex Black Panther Cherry Bomb. I love it, but I'm still figuring out how to get the exact sound I'm going for out of it.