No way I'd pay $20 or more for BB8. Just a little under 3", maybe 2.75"? That's very small. To think that 4" version would be just over 2.5", if my math is correct. Of course, that's probably the size of Yoda (never measured him and don't own the 6" yet).
Since they are showing 5 figures and usually one wave of 6" has four figures, do you think BB8 will be a pack in? I'd be pleasantly surprised if that were the case.