₹13,000 is one of the most-searched water purifier budgets in India. 38 of the 141 purifiers verified on this site fall below it, from ₹1,449 to ₹12,990, with a median of ₹8,990.
Only 12 of the 38 (32%) carry an RO stage. That matters more than any other spec here: UV and UF kill microbes but remove no dissolved solids, so on borewell or tanker supply a non-RO purifier will not make the water drinkable. Check your TDS before choosing from this page.
8 brands are represented: KENT 18, Faber 8, Livpure 5, AO Smith 3, Pureit 1, Brita 1. Every price is the manufacturer's own, read from the brand's own store — never from a marketplace listing or a price-comparison page.
Remember that the purchase price is the smaller half of the decision. An RO purifier costs roughly ₹3,000 a year in filters and membrane; a UV or UF unit about ₹1,200; a gravity unit about ₹600. Those are category estimates and are shown on every product below.