More expensive, yes....8 dollars a bottle compared to 5.50 per bottle.....More limited? not necessarily
I for one don't know anyone that is able to get 2 cases of BB4D without mules, which you could with BBPt5. And OP, these are probably closer to 2:1, but there is an large Venn diagram issue with these bottles.
Its really 9 a person if you count the "special" 2012 bottles that were limit 3 at the same release. Still pales in comparison to BBPt5's 2 case limit.
haha maybe enjoying them a bit too much. Only had BB4D once, years ago, though and was seeing what it may take.