I just ordered the entire Warner Oland set from an Australian collector. It was about $30. But I think I am going to want to have this new "official" set with all the special features. Especially to be able to see Eran Trece, since I have never seen this Spanish version of the lost classic. But also the featurettes. Also, I am sure the quality will be better on the commercial set, because the set I ordered will have 3 films per disc.
Meanwhile, the collector's set will tide me over for my long standing Warner Oland Charlie Chan jones.