I am not familiar with Commercial Harbor Tools. I am familiar with Harbor Freight Tools. Since you mention “inexpensive”, could you be referring to them.
I did a Google search on “commercial harbor tools” and the only “Commercial Harbor Tool” that showed up was a tool and die outfit in Illinois. Probably not what you are referring to. If you were referring to Harbor Freight, there have been many lengthy discussions of their inexpensive offerings in past posts. If you do a search on Breaktime, you should find quite a bit to read. If you are interested in a specific tool, specify it and you may get some reactions here.