I've modified the Reward tiers. They are now suggestions around what each dollar amount possibly contributes to. Everyone who's backed at $15 will be getting something in the mail within the next 2 weeks. Just putting together these 2 posts has caused my arm to sour, so I'm not sure when I'll get to outstanding $5 rewards. If this is what you were looking for when you backed, let me know and I'll process a refund.
Thanks for your understanding.