Adorama offers the Canon WP-DC23 Waterproof Case for Canon PowerShot SD770 Digital Camera
, model no. 2606B001, for $89.95
with free shipping
. That's $4 under our May mention and the lowest total price we've seen. (It's also a current price low by $60.) It features a crystal monitor, built-in strobe, and water resistance to 130 feet.