kevin, prices are listed in the original link.
my experience with salifert kits is that they tend to drift after about 6months after being opened. i've had 2 alk kits that did that and were 1.5-2 dkh apart.
also, the calcium kit readings between an old/new kit where like 80ppm different. their mg kit would run way short on the fluids and i barely got 35 tests per kit.
but, habib had some great customer service and always was willing to help out.