It's getting pretty hard to find if you want 25%cotton and when you do find some the price is pretty high . I found some really old (35 years) reams for sale on eBay . It's 25 bucks a ream . (500 sheets) that may seem high but not when you consider it is selling at blackpowder supply places for about 15 bucks for a 100 sheets . Sometimes more . Many places like Buffalo Arms only have onion skin that is all wood content anymore. Needless to say I should have a lifetime supply