My rule is to always wait one year for an item to show up before resorting to a seconday market. Believe me, it works.
Years ago, I just could not find Lillipop Mace. Looked for months. Finally, I stopped thinking about him and figured I'd get him ebay at some point. A few months later I was in a Rite-Aid and casually checked the toy aisle. There he was. Cheap too, like 5.99.
Patience is the key to cheap collecting.