This deal has ended.
Amazon now has the La Crosse Wireless Weather Station (model 9013U) for just $15.99, the lowest price I've seen since last fall (though it was $2 cheaper then). The weather station displays indoor and outdoor temperatures as well as date / time. I bought one of these because it was a cheap, fun little toy that lets me know exactly what the temperature is without having to actually go outside. Shipping is around $6 or free if you spend $25.