How do you review blinds sellers if you don’t install everything on camera?

We’re a desk-verified spec-and-policy audit, and we say so plainly rather than fabricating hands-on installs. For each seller we read what they publish and hold them to it: is the measuring guide specific and clear, is the width deduction stated plainly, is there a real remake or fit policy (and who pays), and what’s the quoted per-window price at a benchmark 35×48 and 72×48, dated to when we checked. We recompute the pricing math, compare fabrics and lift options on their spec pages, and factor in owner-consensus signals where they’re available. What we don’t do is stage a photogenic install and call it testing. The verdict lives in the audit and moves when a seller changes its policies — which is exactly the point of grading on published, checkable facts.