Drop in an Eko Okna quote PDF (signed or not). Every window, door and set is scored on its full option sheet — profile, reinforcement, size, glazing, operation, colour, couplings — by a model trained on every signed window since 2021 (retrained nightly, prices at today's level). "History says" = what we'd historically sign for that exact spec; each number carries the nearest signed orders as proof. Within ±10% = in line (model holdout error ~8%). 🚪 Doors are scored against their own signed-door history. ⚠️ Specs we've rarely bought (new glass packages, aluminum systems) read as low-confidence — check the comps.