Not only that, but I received an email;

Subject: Your SONICblue Order Confirmation. Order #xxxxxx

Dear xxxx,

Thank you for ordering from SONICblue. This email is a summary of your order. Please keep this email in a safe place, as it is proof of your purchase

I can't see how that they can apply any post-conditions to that order. IANAL, but unless pre-existing statutes exist that allow otherwise, it looks like a solid, accepted and confirmed order.