The High Point balancer is available from B & B Specialties for $39.95. It is made along the lines of the Dubro balancer.
The older High Points have a steel base and are all metal. The newer High Points have a plastic base but the rest is all metal
The Dubro has a plastic base as well as other plastic parts

There's little difference in the ability of the newer High Points and newer Dubros. They are made on the same engineering principles and will perform the same.

There is also a Windsor mad by MAS but the spindle is made for a specific purpose. The balancer is not as useful as the others.