I'm sure you're alluding to AC for the 15" MBP. That's a fair price, but it's a bit higher than B&H has charged in the past - 2 years ago I paid $249 for AC for my late-2013 rMBP, also with free expedited shipping (it showed up the next day in Oregon, from NYC). In any case, B&H will likely offer one of the lowest, if not the lowest price for AC on the 15" MBP and the Mini while being competitive on the iMac and 13" MBP.
If you're a Prime member check their price - the last few AC units I bought from Amazon were followed by a stackable 1-year UL File Storage gift code; Amazon's price was the same as B&H's and I was lazy, but got a nice bonus in the additional file storage.