depends on how many tubes you get, how long the cables need to be and what wattage power supply you get. Clear tubes are about $30 a piece... colored are around $45 a piece... cables are anywhere from $10 to $40 a piece, depending on length and brand and power supplies start at around $100 for a 2 outlet supply... and go up to like $400 for a 12 outlet supply.

Like he said, they're not cheap.

www.galls.com www.awdirect.com both have them.