At JHQ Rheindahlen in the early 70's "time expired" 10-man ration packs were sold for next to nothing by Army Stores at HQ BAOR.
My family and I were very much into camping and they were absolutely brilliant for our camping trips - kids loved the contents, especially KitKats in tins and a very good curry. Sausage and Bacon mix was good too - I still have fond memories.
Like all good things packs were sadly withdrawn from sale as political correctness ruled that as they were past the 'use by' date printed on the box, if anyone should become ill MOD would be responsible - or so I was told. Either way by around 1974/75 packs were no longer sold.