It's an interesting question. If structure is approximately the same between two books and assuming we're talking of books 1950-1960, I'll tolerate off-white pages and pay the same price either way. If pq is cream-off-white, I'd pay 30% less. If pq is cream or less, not interested. At any price. There's a copy out there somewhere with better pages and I'll find that one. And I don't like buying books that I know I'm going to replace. If we're talking books prior to 1950, the rules change. I'd love to have nothing but Reilly or Church books but that's not realistic. I'm probably willing to pay 10% less for cream pages especially for WWII books and earlier but for many of those that I'm after, just finding a copy can be tough and the market is what it is. If I don't buy it for the market price, someone else will. And pretty quickly, lately.