Amazon offers Prime members the
Casio Men's Digital Sport Watch, model no. W-S220-8AVCF, for
$17.49 with
free shipping. (Non-members can spend $35 or more to qualify for
free shipping; otherwise,
shipping costs $4.48.) That's the lowest total price we could find by $30. It features five daily alarms, two countdown interval timers, buckle closure, and water resistance up to 330 feet.