A couple of things (for anyone still pining to buy this set):
1) Don't fret - there's no real discount or savings by buying this set. $365 is the cost of the five brushes together, and you're only getting the case for free (which is a "soft-sided portfolio" according to the website description. It kind of feels like thin neoprene).
2) You can always buy the exact 5 brushes in the set. There are no special edition brushes in the set or anything.
3) If you're persistent enough, I think Saks and NM gets them in stock every now and then. That's how I bought mine.