In Finland Pilkington, makes them to selected customers
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http://www.conceptcarz.com/view/phot...Cab_photo.aspx
Here is one sample of some tricky glass they made.
Oneoff pieces are very expensive to manufacture and one set 10pcs of glasses will cost about 2000€ per piece so 20000€. "dual curvature" is very difficult to control so they have to make lot of test pieces before they get the shape right without any distortion (if you need E-approvals for the glasses etc).
Basicly all small windshield manufacturers make them. Price will varie a lot.