Onedot1 via eBay offers the GoPro Camera Hard Case for $4.53 with free shipping. That's $2 under our mention from three weeks ago of a similar case, $3 below the best price we could find for a similar case today, and tied as the cheapest GoPro storage case we've seen. It features shockproof foam cutouts.

Note: This item will ship in three to seven weeks.