Orange Onions via Amazon offers Amazon Prime members the Belkin Grip Swell Silicone Sleeve for Apple iPad, model no. F8N382tt, for $3.28 with free shipping. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $8.41.) While it's not the best deal we've seen on this case (it was essentially free after a rebate last week), it's the lowest total price we could find by $3.

Amazon Prime membership is $79 per year; however, Prime is free for college students for six months, and free for parents and caregivers for three months. (Note that currently there's a waitlist for Amazon Mom.)