I find it peculiar that Beach Camera would sell it for less on Ebay where they have to pay a fee to Ebay, than there own website. Its doesn't make sense to me. When it sounds too good to be true, it usually is.
I have a friend working at EBay and he told me that Deal of the Day is actually sponsored by EBay to promote its online auction site. So, in this case Ebay is paying BeachCamera whatever they would make at that regular price and that is how BeachCamera is able to sell it at discounted price.
Can I sell your friend a bridge?