When Revenge started issuing these semi-legal tracks in the late 1980s they mixed full length albums with a bunch of vinyl 12" EPs.
Night Of Destruction was simply six of the EPs put onto CD and stuck in a box. Hence the short running times of each disc.
All of the tracks had been issued before, mainly on vinyl, but some on CD. Since then nearly all of the tracks are available elsewhere on CD - on Metallic KO, on the various Live At The Whisky A Go-Go 16/09/73 albums, on the Heavy Liquid box, on I'm Sick Of You, on Kill City, on various 1973 rehearsal compilations.
As far as I can tell only the interview with Ron Asheton and "Dynamite Boogie" (a Williamson / Pop jam from 1972) are still unavailable elsewhere. But as so much of this stuff has been issued again and again and again I could easily be wrong...
However, if it is really cheap it's a neat box to own, especially as it is a limited edition. I already have these songs, so personally I wouldn't bother getting them all again, but if you don't have them then it's a cool set of rarities.
Hope this helps.
Cheers,
Richard