Typically when selling on
ebay it's better to split things up because the more items there are in a listing, the fewer buyers there are who are interested in every single item. But I would say do whatever is the least work for you, and if it doesn't sell after a while, then end the listings and switch things up.
Albums can be heavy and drive up the shipping cost, so make sure to have the buyer pay shipping. (IMHO the most important thing when selling on
ebay is not to lose money on shipping.) There are a lot of
ebay listings that just include the album pages (with stamps on them) without the binder to save weight. Although if you have a very nice binder, that is sometimes more desirable than the stamps inside.