Newegg offers the Corsair CX Series CX450 450W 80+ Bronze Power Supply for $39.99. Apply coupon code "22WCPC8" at checkout and redeem this $20 mail-in rebate to cut that to $15.99. With free shipping, that's the best price we could find by $29. It features four SATA connectors, 6+2-pin PCIe connector, and 120mm fan. Deal ends February 28.
You don't need to hire a contractor or do extensive renovations to add value to your home.