Oh yeah, I totally reckon FOC took some pretty big steps backward compared to WFC figures not so long prior (of which we only got 5 in retail I think)... I've read and heard many times the FOC figures reflect real-world economy at work, e.g. rising cost of plastics, transport, etc.
I'm surprised you list United Megatron over Henkei ver... I don't own the United one, but in pics Henkei seems to look better. Is it different in person??