Here is some news from Sena that you may find helpful and also save some cash on. If you are a Sena customer, you probably also received an offer in your email as well.
Their parent company, Oten Inc., today launched a new group-buying website focused on only Apple related products, the site is: www.orderborder.com
From what I have read, it also has a unique points earning system as well. I can’t see where there is a cost or any risk to this program.