Most Obitsu bodies come with a head. Heads cost about $15-$20 so getting a body without a head won't significantly lower your cost, not the $50 to $100+ of a resin doll.
Yeah, Whitey. That's one of those "machine" translations.
The 50cm and 55cm as well as all the custom Parabox bodies (40/45/47cm) only come in white skin. Some 60cm bodies come in Fleshtone, which is a bit darker and oranger than white skin. Fleshtone is sort of being phased out.
There is a new Obitsu full set that just went on sale in a new color, super white. The regular Obitsu white skin is similar to Volks normal so this new super white is whiter, probably more like Volks white. The new full set's name is Mikaduki 2. I'd post a link but the Obitsu site isn't responding right now. I do have a picture.

Mikaduki 2 is the blue girl on the left (super white) and the original Mikaduki is on the right in black (white skin).