Bicycles not only take up a lot of space in garages, they also tend to get buried behind all the other stuff that’s crammed in there. The Kradl is designed to help, by hoisting bikes up to the ceiling. And what’s more, it doesn’t use any electricity.
If you wanted, you could just buy pulleys, rope, and a couple hooks to make your own. You could even just use eye screws and run the ropes through them for even cheaper!