What are the earliest stamps in the collection that are on hinged pages? I'd have at least one local stamp dealer value the lot first. Certain older stamps could be worth money. But there would also be many many commons in the mix. If you sell on
ebay you need to have an overall idea what the lot is worth in one group. Because as mentioned its better to sell as a group. If you try to sell page by page you may end up with the common pages not selling. Also if your not aware of a hidden gem you may sell it to cheaply. Get an expert to look at them. I can tell you that hours of scanning is a lot of tiring work. Is it worth ebaying them if they all turn out to be common stamps?