Yes, the money I paid is like a steal. Also I managed to find a pretty nice looking used EF-FZ adaptor made by KIPON, no LDS but with full manual iris control just around 90 US$, so the total price is exact 619$.
I think the last owner is a well known rental company located in Beijing, the man who sell me this camera says he had to dig in the storage cabinet to get this old camera out, and he still got 5 more in hand with the same price but no 444 upgrade.
Funny thing is, although this camera is in CINEALTA product line, but the sensor is actually provided by FUJIFILM, I found a used parts disassembled form F3, and it clearly says the manufacturer. So Sony, what are you guys doing?
I don't really mind the weight, in fact I like heavy camera. Heavier camera will gives you a more 'cinematic' movement IMHO. But size does matter. Besides the price, a important reason I choose baby alexa instead of the REAL ALEXA (CLASSIC) is size, the real alexa is just too big for small team operation.