[quote=Nor-LA-SD-guy]I paid I think less than 300 dollars to have them installed on one single door downstairs and the double door up stairs (opens to the deck), I like them, the only issue is don’t let them go when you unhook the magnetic connector as they tend to retract with some force, so maybe not a good Idea with Kids, also they do come out of the track once in awhile (no bigge easy to fix).[/quote]

The Clearview ones have some patent on a mechanism that slows the door down so it doesnt snap back quickly.

Casper uses springs and guarantees them for life to hold the speed they are set on.