I bought my two 760 round cases for $175.00 each about three years ago. It was dated 1966, but was essentially the same thing. All the rounds were in the same 32 round boxes. I've gone though about three boxes of one case and have given away one box to a buddy. Only had one "click--boom" so far. It's really accurate and when the politicians back off and the trade routes between here and Pakistan open up again, I plan on buying several more cases. Obama's election *****ed the deal on cheap surplus ammo. It went from $175.00 a case to about twice that and then the supplyer quit importing it. It'll go down again. Go ahead and shoot that $40.00 box up. By the way, it sounds to me like that surplus dealer convinced you the box was rare and thus desirable, than offered you a chance to own an unopened box. The ammo exists in the countless thousands of cases and will one day be imported again. I've got about 45 to 50 boxes of it and will sell you all for $38.00 per box!