Perhaps you can try the ISTA brand kits... they look very similar (maybe re-branded versions of the same items?):
http://www.istaproducts.com/details+...m/products/12/
I've seen the ISTA brand kits available at Seaview, the premium kit (with Co2 cartridge, regulator, support rack, 2-in-1 bubble counter and acrylic diffuser) cost around $108 (if i remember correctly).
There are also the cheaper kits available there too: http://www.istaproducts.com/CO2+Disp...t/products/16/
Note that those kit setups don't use electric solenoid regulators, just manual regulators... so you have to manually switch them on and off.
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