I went thru similar thoughts. More drums does not make you better - it's what you do with the drums that makes the difference - my own thoughts. On price, there are huge margins on drums. There is a internet store called http://www.rmcaudiodirect.com/
this place has good prices (and get another 10-15% off by asking) - no tax, no shipping. I recently purchased the Roland TD15KV - everyone selling the $3000 list kit for $2500, they were 500 below this.. and I'm out the door with HH pedal, double bass, throne, for $2170 (us) - I'm sure there are better prices out there - but look around and don't take the listed price and what you will have to pay.