Well the first thing you need to know is that in keeping with Lady Gaga's keen sense of visual style and attention to detail they've really splashed out on the artwork.
Secondly, the remix package is not yet available from UK iTunes. You can, however, click here to listen to clips on US iTunes. Just listen to the clips on the webpage — if it tries to open iTunes tell it to piss off.
The fact that you can't buy it in the UK is only partly problematic, because almost half the remixes sound like they're rubbish.
THE GOOD ONES
Rusko's Pupuseria remix
The Sound Of Arrows remix
Bimbo Jones remix
Skrillex remix
Afrojack remix
THE BAD ONES
Dave Aude remix
Kleerup remix
Kim Fai remix
The big question of course is whether any of the mixes are as good as (or better than) the proper actual studio version of 'Alejandro' and the answer, quite obviously, is no of course they're bloody not what on earth are you thinking.