Planet in their infinate wisdom have stopped producing parts for the e-blade cockers so your looking for a second hand one or old stock on all our cocker parts. The cocker is still a fantastic gun and i'm amazed that they have just stopped production dead as they're must be thousands of cockers still in use today. I know i'm still using mine and love it to bits
A possible alternative to your search?
£35 (ish) + shipping from the states http://scenariodreams.com/productpages/ebladetboard.htm
Hope that's of some help
I have the Ion T board in my back up marker and it works a treat, no problems at all.
Try Voodoodoll, i'm sure Neil sold a cocker T board not that long ago