{"niche":"What are the top-rated inner spring mattresses within my budget?","description":"What are the top-rated inner spring mattresses within my budget?","products":[{"brand":"Sleep Foundation","model":"Nolah Evolution 15","price_gbp":774.08,"origin_country":null,"specs":{"gauge":"13.72","height":"15 in","comfort_level":"Luxury Firm","pocketed_coils":"8 in pocketed coil unit","individual_motion_isolation":"5-star motion isolation"},"confidence_score":null,"sources":[{"label":"Nolahmattress.com","url":"https://www.nolahmattress.com/products/nolah-evolution-15","currency":"USD","source_country":"US","price":1480.0,"price_gbp":1120.98,"scraped_at":"2026-06-28T18:20:20.685771"},{"label":"TheSleepLoft.com","url":"https://thesleeploft.com/products/nolah-evolution-15","currency":"USD","source_country":"US","price":1022.0,"price_gbp":774.08,"scraped_at":"2026-06-28T18:20:20.685771"},{"label":"Overstock.com","url":"https://www.overstock.com/Home-Garden/Nolah-Evolution-Hybrid-Mattress-with-Cooling-Pillow-Top/43697624/product.html","currency":"USD","source_country":"US","price":1176.5,"price_gbp":891.1,"scraped_at":"2026-06-28T18:20:20.685771"},{"label":"Nolahmattress.com","url":"https://www.nolahmattress.com/products/nolah-evolution-15","currency":"USD","source_country":"US","price":1480.0,"price_gbp":1120.98,"scraped_at":"2026-06-28T18:20:23.513265"},{"label":"TheSleepLoft.com","url":"https://thesleeploft.com/products/nolah-evolution-15","currency":"USD","source_country":"US","price":1022.0,"price_gbp":774.08,"scraped_at":"2026-06-28T18:20:23.513265"},{"label":"Overstock.com","url":"https://www.overstock.com/Home-Garden/Nolah-Evolution-Hybrid-Mattress-with-Cooling-Pillow-Top/43697624/product.html","currency":"USD","source_country":"US","price":1176.5,"price_gbp":891.1,"scraped_at":"2026-06-28T18:20:23.513265"}],"summary":"The Nolah Evolution 15 is a 15-inch hybrid with a quilted comfort top and multiple foam layers above a pocketed coil support core. It's offered in multiple firmness levels (Plush, Luxury Firm, Firm) and includes zoned support/coil support for targeted pressure relief and spinal alignment. Sleep Foundation lists it as having excellent motion isolation.","ideal_for":"If your budget is for top-rated hybrid innerspring beds, the Evolution 15's zoned support coils and individually pocketed coil unit (with 5-star motion isolation) make it a strong match for couples and sleepers who want responsive innerspring support without excessive partner disturbance."}]}