Bought from Amazon in UK, balls came in 4 sleeves, the box looked genuine but was shrink-wrapped. One practice putt was all it took to know they weren't Pro V1s, and when hitting them they didn't perform like the real thing wither. Not as solid a feel, less distance, less playability.
Looked at the writing on the sleeve (box thrown away so couldn't check that), found hilarious spelling mistakes - see the image.
I've returned and asked for a refund, and reported to Acushnet. Shut the fakers down!