An update on the duck leg search...
I first tried International Club but it turns out that they were in the midst of a clearance sale. Evidently they will be remodeling soon. In any case, they had only dry & canned foods. It did look like they had some pretty good deals, but I don't know how much would be left at this point (I was there last Saturday).
Next stop was Chinatown. I think I hit just about all of the grocery stores in Chinatown but there was nary a duck leg to be seen. I did see plenty of frogs though... I admit that I may have missed a package of frozen legs in one of the freezers as a lot of the items were not labeled and not always easy to identify.
After Chinatown, I decided to hit Argyle and several grocery stores in this area had duck legs (I got wise and called ahead first). I ended up picking up a couple of packages at a Thai grocery store on Broadway for $2.99/lb. The name of the store escapes me at the time but I will add it to the post when I get back home.