The 214s are only available in a 15 or 16" diameter. A 15" x 7" 214 weighs under 10lbs. and a 16" x 12" 214 weighs around 12lbs.
The 311s can be made in 17" and come with a 6061T651 forged center. Jongbloed's own testing shows an 18% decrease in brake temps using these wheels on the track.
The centers, rims, etc. are all made here in the US on Jongbloed's own tooling. Nothing comes over from China.
As for pricing, I'll be selling them for 20% off list. To give you an example:
A 15" x 7" 214 with the proper offset for a 240Z lists for $714 and I'll sell them for $571.20 each.