C-Teck via Amazon offers this Smart Cover Snap On Hard Case for iPad 2 in Crystal Clear for $3.52 with free shipping. That's slightly less than our mention from two weeks ago and the lowest total price we could find for a similar case by $3. It protects your iPad 2 from scratches and is compatible with the Apple Smart Cover (sold separately). It also features cutouts for access to ports and buttons.

Update: The price has since fallen to $3.48.

Of note, expect this item to arrive in 2 to 3 weeks.