I'm in the market to purchase a green screen (not to build one--unless hanging some wrinkle-free green fabric at the local sewing store works). What reliable online store offers one at a reasonable price? I'll be using the DVX100 and possibly a HD cam down the road.

You would have to provide your own frame (or staple to a wall, board, etc) but Rosebrand has some inexpensive fabrics for this such as Polymuslin which is 10 feet wide:

http://www.rosebrand.com/product559/128-Poly-Muslin-IFR.aspx?cid=178&idx=1250&tid=1&info=Keying

Or the Trevira which is more than 16 feet wide:

http://www.rosebrand.com/product561/165-Trevira-CS-Digital-Muslin-IFR.aspx?cid=178&idx=5362&tid=1&info=Keying

Check out EEFX.com.

Their fabric lays out flat. And any wrinkles will relax out fairly quickly.

The surface also has a texture that makes it easier to light evenly.

I guess what it comes down to is this: where do you pros buy your "green screen" or green screen material? Thanks for the replies. It's appreciated.

I don't know what the pros use, but I bought large sheets of bright green fabric from a fabric store for 25 bucks and hung it outside on a sunny day to film. The results are in this video:

http://www.youtube.com/watch?v=cQZmgnDGn6k&eurl=http%3A%2F%2Fusers%2Eeastlink%2Eca%2F%7Ejtomchuk%2F

In my opinion, it's not the best and there was many problems getting even lighting especially with only the sun as our light and the fabric blowing around but the results are pretty damn good. (For my needs anyway...)