These are great remotes for the money. For more details, read my Vello Shutterboss Review.
Vello ShutterBoss remotes for most Canon, Nikon and Pentax DSLRs are available for $34.50 right now (normally $52.50). These remotes serve as interval timers and remote shutter releases, which are essential for timelapse recording on Canon DSLRs. As a result, these are a cheaper alternative to Canon’s own $130 TC-80N3 remote.