Repair or replace a paver driveway
Pavers come up one at a time, so a sunken patch or a few broken pavers can usually be lifted, the base under them fixed and the same pavers set back down. When the dips run along the edges or across the whole driveway, the base or the edging usually gave out, and I'll tell you a rebuild is the better use of your money. A crumbling brick or stone border is more like masonry restoration, and I can look at that while I'm there.
What shapes the cost of driveway pavers
Past size and tearout, the base is the big one, because a deeper base means more digging, more material and more time packing it down. Real edge restraints cost more than flower-bed edging and earn it. The paver you pick matters too, standard or permeable, and so does the shape of the driveway, since curves, slopes and tight access mean more cuts and handwork. I'd rather spend your money below the surface than on a fancier paver over a thin base.