Gargraves switches have been made for a long time. The newer (last decade or so) ones have worked well for me--with the already-mentioned caveat about slide shoes.
If you are trying to save some money by buying used, then I would recommend you run far away from the older version with the blackened short points--an example in this auction listing:
Of the newer-production switches, I have heard concerns about the durability of those with cast metal points. This is because the cast points are held in by little plastic tabs molded into the tie, like this:
Whereas the stamped metal points are held from underneath by a brass pin, like this:
Have not had any failures in either system myself, but perhaps something to consider if your turnouts will see heavy use and lots of operating hours.
