Every homeowner comparing paver quotes is looking at the same photographs and broadly the same materials. What actually differs between the bids is invisible: how deep the base goes, whether it is compacted in lifts to a measured density, whether a separation layer was included, and where the water is designed to leave.
That work is buried within hours of being finished and nobody can inspect it afterwards — which is precisely why it is where a low bid finds its savings. The surface looks identical at handover. It behaves completely differently in year three.
So the question is not which contractor has the nicer portfolio. It is which one will still be right when the part you cannot see starts carrying load.