Discount for Forum Members?

I'm getting ready to purchase a BT Stiffening Plate through the PriusChat store. The store mentions discounts for Forum members, but when I link to the store while logged into PriusChat, the store doesn't recognize me as a member. It also appears that you can't log in with your PriusChat login/password...

Do I need to create a new account with the store? And would a discount for forum members apply afterwards?

Just curious...

Thanks!
Bryan