The prices for all the kits are pretty much cost, less than what you'd pay for individual parts from Parts Express or most anywhere else. A Stage four π kit for example costs about $335.00 if you buy everything yourself from Parts Express, the woofer is $185.00, the tweeter is $50.00, the horn flare is $30.00 and the crossover parts add up to about $70.00 ($32.00 for PXB, $12.00 for zobel resistor, $15.00 for Zobel caps, $8.00 for tweeter cable assy and a few bucks for the connector plate and wire). Our kit is $285.00 so you save fifty bucks and don't have to solder everything up, which takes a couple hours to do.