Do some businesses exist which deal in old slabs? Sure. Though the large majority of results I see in your link are pretty small. But more importantly there ar

Do some businesses exist which deal in old slabs? Sure. Though the large majority of results I see in your link are pretty small. But more importantly there are a lot of kitchen and bathroom renovations (and I _think_ renovations outnumber new construction by a lot ...) so one might think that almost as many countertops being removed as installed, and that a large portion of these could be serviced by recycled ones. The comment from danans asserted that these materials are "usually" reused -- which I am doubtful of.