HIFI,
You may want to try Northstar Motorsports :
http://www.northstarmotorsports.com/products/sfID1/13/sfID2/13/manufacturerID/86
I bought the Bell Mag 4 a couple of months ago for $289.00 for autocross.
They are local so I was able to pick it up there, but I had to pay sales tax.
It is Snell SA2005 approved, and I assume open face is also good for DE.
Hope this helps...
Nick