I just sold a set of 8 bolt/8 lugs wheels that were pretty clean for $245 on ebay (well maybe 4 months ago)...the magnesium locks are worth about $15 each
Advertsie them on
www.pirate4x4.com off road guys are cutting out the centers and recentering them. You should be able to get $200+ for a set of four wheels.
I suspect magnesium was chosen for the strength to weight ratio....but magnesium scrap is not worth much. My advice would be to save it for a good bonfire night if nobody wants them. I do not think magnesium was a good choice-they had to add runflat gel, and subsequently changed the design.
I personally run the magnium inserts on my Jeep...but the runflats are cut off and I just kept the beadlock ring that sandwhiches the the inner and outer tire beads (double beadlock).
I think if you adverstise them on some offroad boards-they will move fast.
Note: 12 bolt wheels are for radial tires and 8 bolts for biased ply...you should not mix and match. Most off road rigs run biased ply tires because they flex easier with no steel or composite belts (such as boggers, and most swampers ect...)