Hey, long time user, don't comment much on things and have never posted in the forum, but thought this was a cool find.
Burnt Toast Vinyl has copies of mewithoutYou's Brother Sister in stock. It appears they have 55 copies in stock. Should be accurate. It said they had 56 and it updated when I ordered mine. Said to be Blue marble. Sweet price of $13 bucks and only $3 shipping to my place.
I've been wanting to find a copy for a while. I know the last time I saw them they had a few copies at merch but I haven't been able to find it online in stock any where. So if you want one heres the link!