wow....Sample pricing:
Aluminium Coupon 40mm x 40mm x 3mm – £300
Aluminium Foil Vantablack hexagon 100mm x 100mm – £323
Copper Coupon 76.2 x 25.4mm – £300
Educational Sample – £560
Yup it's because of the process used to grow the carbon nano tubes, it's not a paint as such
Also
"At this time Surrey NanoSystems (SNS), the creators of Vantablack paint, control all manufacture and distribution of the coating, and they do not sell to private individuals. They do, however, sell their product to verified companies, research facilities and educational institutions. If you work at a university or museum, you can purchase a sample for educational purposes. The sample consists of a ‘crinkled foil’ display unit that demonstrates to viewers the unique properties of the coating."
Which are the prices you quoted.
That said MCT have made a watch (well 10 of them) coated in it which can be yours for just £75,000 + taxes (around US$105,000)
Edit:
"Each watch uses the substance to coat the inside of the case, giving the illusion that the dials are floating in a black hole. The tip of the second hand is also coated, and as it rotates over the black of the casing you can watch as it seems to entirely disappear."