With orders of $25 or more, Amazon offers Prime members the Leviton Decora 15/30/60/120-Minute Countdown Timer Switch in White/Ivory/Light Almond, model no. LTB02-1LZ, for $4.09 with free shipping. (Non-members can spend $49 or more to qualify for free shipping.) That's the lowest total price we could find by $17. This timer switch works with lights, ventilation, exhaust, attic and ceiling fans, heaters, heat lamps, pool filters, and hot tubs. It features four presets (15 minutes, 30 minutes, one hour, two hours), a time delay switch, LED indicators, and 3-color kit.

Note that this item is part of Amazon's "Add-on program" and can only be purchased with an order of $25 or more. It usually ships within one to three months.