Look, at the end of the day, you are selling hash for 4 and a half times the going rate. Lower power consumption, even if it happens (and there is no guaranteeing it will) is never going to make up for that no matter what one pays for electricity, especially when you consider that your product won't start actually mining for at least another month, minimum. Coupled with the fact that your product doesn't even exist yet, and, as anyone who has followed AT knows probably never will exist (they are way overdue and don't even have their chips or a final design done yet).
If the product does actually ship by the end of the month, and does actually consume 400 watts, they are worth between one half and one bitcoin. Given that neither of those things are even close to certain I think my conditional offer of .4btc is quite generous. If you don't, well good luck with the sale.
Dear Brian,
Thank you for your interest and excellent articulation. I decline your offer.
Thank you