I've got two left and have trashed three.  Once I had to break a the window on a door to get into my house.  Winter, dark, cold and windy.  I figured a 2 lb hammer would easily break the window.  I was wrong!  That was the cheapest thing to break.  I've had to cut the lock out of a door on my shop too.  Both doors now have $20 knobs on them.  The doors also shut and latch better.  I'm now searching for a better lock.  uLoc is not better by the way.