Amazon offers the Daniel Wellington Women's Classic Cornwall 36mm Watch in Black for $100.85 with free shipping. (LivingSocial offers it for pennies more.) That's the lowest price we could find by $56. It features a stainless steel casing, quartz movement, and water resistance to 100 feet.

Update: The price has increased at Amazon; however, LivingSocial offers it for $101.43 with free shipping.