I buy collections and break them up to sell on
ebay and I always have leftovers.
Specialty album even empty or with some stamps removed have value depending on condition of course . Albums with a lot of empty black mounts don't sell too well. Just try and keep the pages intact and complete as you take stamps out.
I usually sell stamps on pages up to about 1970 and set the later years aside and I also set aside countries with stamps but not enough to sell as a stand alone item on
ebay. I sort these as best I can and then put them into binders I've emptied. These also sell quite well on
ebay.
I used to be able to sell empty binders I've accumulated in groups of 5 and ship them in the Large Game Console Priority Mail Boxes, but these boxes have been discontinued.
The stuff that's left I pile into Priority Boxes and these sell well too.
When I was collecting my goal was to use feeder collections and
ebay resales to built my collection for free. It worked pretty well.
Ken