I'm somewhat interested in buying cel sheets for some of my favourite shows, but it seems to be very hard to find somewhere that stocks them. 

I have had the opportunity at a convention once, but I'm pretty sure they were counterfeit, so I decided against it. I unfortunately don't remember the retailer's name to look them up.

I have been looking for a while, but almost every website I come across has been shut down.

Looking on [Cels.org][1], all the websites are down. The ones that aren't, have a live website, but with a closure notice:
![enter image description here][2]

Are there any companies (preferably based in the West) that sell cel sheets?


  [1]: http://cels.org
  [2]: https://i.sstatic.net/tPStf.png