My understanding is same: 30% of the sticks sold by a reseller at .99 are to be sold at .10 to the latest buyers.. This is designed to help with or reduce the negativity a buyer experienced when price dropped right after they bought at .99 level.

And it is 1:1 and obviously inventory is allocated to the latest buyers in reverse order until promo units are gone.

Until I have this promo inventory received, I don't know who and when.  So if you PM me questions related to when are you getting it? Or am I going to make it in the promo pool? I really don't know so its not possible to give you a concrete answer, other then point you to this post