Most e-tailers have this for around $40 - $42. Fox has a distribution deal through Costco and I've seen some really cheap Fox stuff there. I wouldn't be surprised if Costco sells the Chan set for $35 - $40.
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.