Hi,
I found a supplier of this product that you might want to check out:
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They are actually a division of dva.com which is a SaleHoo supplier and is a well established company. They have a wide range of DVDs (specifically entertainment/tv shows in box sets). They accept PayPal and major CCs and ship worldwide.
I have also found that dhgate has a few entertainment DVDs. If you want to have a look, here's the link:
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I will do some more searching and will get back to you.
Thanks and have a great weekend, everyone! :)