This looks interesting. It's through Amazon, but it looks like a lot of the invite-only shopping sites. They will offer super discounts on certain brands for a few days, then move to the next big sale. As an incentive to get people shopping, Amazon is offering a special coupon!
$10 off Promotion Code: through September 1, customers can save $10 on their order by entering the code MYHABITX at checkout.
Check out the deals by clicking this link. I don't see anything about needing an invitation to this one. I'm also adding a little scrolly box so you can see the new deals each day.