If you forgot to finalize the pledge manager, we're planning on opening the post-production remaining content sale for the backers (with the priority for the backers that did not finalized the pledge manager) in January/February. We'll be contacting you at closer time frame (also you can expect the Kickstarter project update for that).
Keep in mind, at this point the production is long ago done and what remain is the post-production quantity. Not everything may be available, and the precise costs/quantities will be known at the opening time frame.
If you'd rather not want to wait, and want the refund, you can contact us directly.