Kotobukiya, Darth Vader Episode 3 Statue
Kotobukiya vinyl snap-together kits are pre-painted and are easily put together. It might require some effort to stick all the pieces together nicely, but it should be a piece of cake.
This Darth Vader statue had an "unlimited" production run and was available at every decent Star Wars retailer. The box doesn't include anything else besides the actual statue.