AltaTac via Buy.com offers the Oregon Scientific ECO Solar Weather Station
, model no. RMR331ES, for $23.99
with free shipping
. That's the lowest total price we could find by $11. It features a solar-powered wireless thermometer with detachable solar panel, indoor and outdoor temperature display, radio-controlled clock and calendar, LED backlight, up to a 100-foot wireless transmission range, and more.