Sorry for the delay. The SpiderTrax Dolly was already announced to accept orders, but we only announced it to those who filled out the original form. Today i'm announcing that you can order the dolly (no fluid heads available at this time), only if you are a US resident within the 48 continental states, and payment accepted is Paypal only.
There is only one option available at this time, and it is the complete base kit which includes solid AL base plate, 2 solid AL axles, 4 wheels, 4 red bearings, 2 clamp knobs, 1/4" screw with 3/8" step up adapter to mount either your camera or a fluid head directly to the base.. The wheels will already come preassembled, so setup is simply just placing the axles on the base (5 seconds you're ready to go).
There are a limited amount of orders left, and you can grab it over at http://www.PhotographyAndCinema.com.