Shelf Life of Fuji Crystal Archive Type II Paper

[spacegoose]

I bought a 100 sheet box on ebay, I am now told is from 2010, at an about 35% discount from new, and am wondering if it should still be good?

I know that will depend on how it's been stored, (I am trying to find out), I could try to cancel it, should I?

Would appreciate any info for refrigerated, frozen, room temperature, or worse storage, and what I might expect.

Thanks!
Bill