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by Someone 2335 days ago
Paintings can be reproduced, both manually and automatically. Prints used to be easy to spot because of color quality and because they were perfectly flat, but that has become a lot harder with the advent of 3D printers that can layer ink and even craquelure (visually). See for example https://shop.ariustechnology.com/collections/all-products.

I think it’s more a matter of ‘snobbiness’ that determines prices that get paid.