Depend's on what $$ you call cheap.
I found this:-
http://www.godashmat.com/Dashmat_dashcovers.asp
Select your model to view - Approx $23 for MO as of today.
You can even choose an NFL logo or have it monogramed for a few bucks more.
I bet you there's a bunch of web sites with similar products (Google is your best friend...) + there's always ebay.
Personally, I'd like to touch, feel and see the material before I buy. But I doubt if that would be cheaper than buying online.
Have fun.