I love the Canon TC-80N3. In addition to being a simple remote shutter release, it also has a self-timer, and interval timer, a long exposure timer, and an exposure counter.
Set it up in front of a chrysalis and have it take 1 picture every minute so that you can see the butterfly emerge. Or maybe catch a flower opening.
Want to take a photo of star trails while your camping but don't want to be up in the middle of the night? Tell it to wait 1 hour before opening and then keep the shutter open for 3 hours.
Set up the camera to go off in 10 seconds and then take 5 photos so that hopefully you'll get one where no one is blinking.
It's about $130, so it's a significant premium over a simple remote shutter release. It can do a lot more. It's your call as to whether the extra capabilities are worth the extra cash.