Try ebay, you can buy the whole set for $20-$30, and that's pretty cheap considering it's originally $50.
Amazon, Target, Wal Mart, and eBay are all online retailers that offer the Invader Zim DVD for purchase online. One can also purchase it in stores like Target, KMart, and Wal Mart.
Invader Zim is out of print (See the link below to Amazon.com.) .
You'll have better luck buying a region free DVD player .
www.amazon.com/
nicktoonsnetwork.com.
YA
You can buy them at Hot Topic .
Hot topic
Your best bet is to buy the series DVD set. All websites have gimmicks to them and you have to give personal information out.
yes you can you can buy them at hot topic and on eBay
Invader Zim is property of Nickelodeon. Amazon has an exclusive deal with Nickelodeon, therefore, you can only buy new Nickelodeon DVDs legally from Amazon. Any other DVDs you may find anywhere else maybe used or illegitimate. If the DVD you are looking for cannot be found on Amazon, then it has yet to be released.
You probably can get one of of ebay