The reviewer who thinks this is a marketing ploy seems to be missing the point.
As any serious Beatles fan who has either spent big money on near mint original USA vinyl or spent not quite such big money in the 90's on the variety of bootlegs of the original USA LPs will know, the mixes on these LPs are completely different to those on the UK albums and contain some unique versions of the tracks.
Examples : The US Mono version of 'And I Love Her' features Paul's lead vocal single tracked whereas on all other releases it is double tracked, giving a very different sound to the song.
The US mono version of 'Anytime At All' does not have the piano that is on all other versions, again making this a very different version.
There are plenty more differences to be found. Add to this the difference in the overall mixes, the added reverb in some cases etc, then this box set is totally essential for Beatles completists who don't want to wear out their original US Stereo and Mono LPs.