Otherwise, I might have pre-ordered at C100 rather than a BMD CC.
Dont take this the wrong way but that last like makes your whole post seem more like a justification for your purchase more than a valid argument.
As mentioned before the costs of a proper rig for the BMCC is expensive. http://store.redrockmicro.com/Catalog/ultraCageHandheldRigs/Camera-rig-for-blackmagic-cinema-camera-ultraEvent
$1061 is a little more than the $50 you guesstimated.
The difference is you don't need to add the extra to the C100/300/500 because they come with the extra handle and other parts that make it work for handheld.
HDD capacity sure you can record in Pro Res format and get yourself some more storage space, but if thats the case then whats the point of buying a camera that is designed to capture 2.5k raw?
And lets also be serious, you dont even go onto a job with 1 SD/CF or SSD Card, you carry multiple. So you can also multiply your figure for SSDs by 4 (at least).
Same goes for battery solutions, you have to buy V-lock batteries (plural as in more than 1 if you are planning on using this as a commercial camera, min purchase 4) and mounts and chargers......all more $$.
External storage, again you mention compressing the format for storage, which is a viable option, but it also increases handling time when data wrangling, So instead of being able to do just a say 240GB dump from an SSD to a backup solution you now have to go through the process of converting it and then backing it up, Increasing work flow and killing time management.
As for the initial cost of the BMCC.
The way i see it, its like that happened when RED released the Scarlet. Initially people would rant and rave about how much cheaper it was compared to the C300 or other competitors. Then the truth about cost of ownership came out and the "cheap" figures almost doubled.
Why? Because people cant justify paying $16k for a camera as an outright purchase, but they can afford to buy the $5k body, then they can justify spending a bit here and a bit there until they have spent the same $16k but in multiple purchases.
I understand that not every camera is for everyone.
At the same time i understand that the C100 is not perfect, but then neither is the BMCC, FS100, FS700, C300, C500, F3, Alexa, Scarlet, Epic....etc etc. Every camera has its faults.