Adorama offers the Spinlight 360 Extreme Modular Shoe Mount Flash System
with free shipping
. That's $30 off and the lowest total price we could find for this kit. This lighting system claims to be compatible specifically with the Nikon SB-600, Nikon SB-700, Nikon SB-800, Nikon SB-900, Nikon SB-910, Canon 580EX II, Canon 580EX, Canon Speedlite 600EX-RT, Canon 480EX II, and Sony HVL-F58AM flashes, as well as other flashes of similar size.