I bought a few gallons from Chevrolet back in 2000 for $33 a gal.I know they stopped making it for sometime once they ran out of inventory,but heard they started mixing it again.
Contact Melrose T-Top international here in Cortland Il.They have,or once had the GM license to remix it..
http://melroset-tops.com/products/paint.html
..or call Classic Muscle in Salem N.C...1-800-722-4828.
They show they have a 60% gloss reconditioning paint under #1050104 for $89.95 a gal.,which they may be getting directly from Melrose.Their not showing a pic.