Summary: I think I paid $250.00 If you are looking to build a system with high, mid, woofer and sub, which is what I did "It works." Alot of tweaking and still alot of tweaking. I use this to control four older ADS MX and CMX series amps. At present I am not using the passive x-overs for my speakers. I feel that imaging lacks due to timber adjustments built into passives. The A500 is now going to be used for signal routing to my amps with the final Hz control coming from the x-overs.