My buddy has one on facebook:
futaba 4pk super r/case/receivers
$375
Futaba 4pk super r with 2 r603ff, 1 r603fs and 1 r614fs receiver. Comes with charger and futaba metal carrying case. Everything works like it should. 614 antenna is cut flush but has no affect for indoor racing, I ran it in stock buggy and carpet oval with no signal issues.
PM me if interested.