Amazon is selling the Photive ML-L3 Wireless Shutter Release Remote for Nikon DSLRs for just $2 with free shipping. The retail price is $30, so it’s a crazy 93% discount. No idea if the price will last — maybe it’s a mistake.
Update: Looks like the remote only ships to US addresses.
Update: Here’s something similar for Canon DSLRs for $2.88.