Does anybody have episode #94, "Mr. Ed Joins the Peace Corps" on video? It's from season #4. Need it for my collection.

Thanks

Just wondering, but how much would all 143 episodes cost on DVD? Is even buying them legal? I really hope it is because I would like to see the ones I'm missing. The "best of" set really doesn't have much at all on it. If anyone could help me out or explain the legal situation that would be awesome.