I was in an HMV yesterday and they had the BD 1+ for either $55.99 or $59.99 (two on display with differing price tags). I didn't pick it up because I've got a couple of orders en route. One from Kino Lorber (with The Mask, Giorgio Moroder's Metropolis and The Party) and a Dutch region free...
I think they're attempting to justify the price by including the book. I would be perfectly happy with a non-book 2BD+1CD version, but I suspect that won't happen until sometime further down the road, like the non box-o'-goodies versions of the Harry Potter films and the complete Dexter and...
To be fair, Magical Mystery Tour is a long-form video, and while there are individual sequences for each song, I think their omission is appropriate here.
EDIT: Dave is right; MMT was released worldwide on Blu-ray on a region-free disc, with other packaging options as well, in 2012.
I think it can be successfully argued that the 1 and 1+ sets contain high resolution audio already; they're just not "audio only" discs, which is fine by me.