Those are the best wheels...period. They are literally bombproof. My thought from talking with a few vendors is they are $450ish per wheel. If you have the cash and are going to be doing a ton of offroading, they are worth it!
I think they offer them in brushed, dark grey and black. If I recall correctly you can get them custom powdercoated as well.
Weight would be my only concern as the bolts are steel and each wheel has a bunch of bolts to them. Also, the centre rubber ring that sits between the beads is also quite thick. Both of those would add weight to the wheel above and beyond a traditional alloy wheel.
Very nice!!!