I am reasonably sure that is a counterfeit product, especially considering the price. It does not correspond with the packaging and layout of any official release that I am aware of. I would stay clear of it.
If you want all of the films on Blu-ray in a box set as inexpensively as possible with the latest remasters then I would recommend this set, which runs around $80-$90.
I have since learned that this set apparently does NOT have the new scans and that the only way to get the Blu-rays with the new scans is to buy the massive 27 disc 4K set. Have you read anything about that?