I took the plunge and I ordered a 20 inch 224V upper and 200 rounds of 224V 90gr Fusion for about $476 shipped (Live in GA - 6% Tax). Free shipping. Based on ammoseek, 200 rounds of 224V Federal Fusion = $174 plus shipping. There is also $5 per box rebate on this ammo. My math is 476 - $50 - $174 = $about $250 for the complete upper. If you are not in GA and do not pay sales tax, the deal is even better.
I heard some rumblings on issues with "gen 1" 224V barrels having issues with heavy bullets due to issues with chamber reamers. I will see how this barrel shoots - if it shoots 55s to 77s well I will be very happy.