I am also only lacking the rails and the bolts to attach the rails. I ordered mine from a local company a few miles away from my place. Here is what I was quoted for the rails:
IVTAAG x1, 64.5" - $149.91
IVTAAS x2, 62.5" - $104.53 each
IVTAAN x1, 23" - $24.47
I'm not sure what bolt on v rails are but if I had to do this again I would definitely buy my rails first before I dropped the cash on all the other parts just in case they never show up... I like the concept behind the plasambot; ie links to the materials and you buy it all. I think it saves a lot of time and headaches vs figuring it all out myself.