The availability of the promo's has been resolved. When you buy from plaid hat you get a promo free. You will be able to buy the promo by itself from plaidhat's store. Promos will be included in the tournament kits being released in the future to be given out to every participant in the tournament.

Here is the link to the article that the distribution model for the ashes promos is more fully revealed.
http://www.plaidhatgames.com/news/618