The Kaiyodo Unit - 00 metallic repaint is one of the easier to get large scale Evangelion figures. It can be had from shows or Amazon for around $20, if one is to look carefully. Additionally, it is a fairly robust figure, and actually can live up to what I consider a 'toy' rather than a poseable model, like many of the other Evangelion license toys.
In any event, Zerogouki comes with a Positron Rifle, Shotgun (did any of the EVAs use a shotgun?), tons of spare hands, the power umbilical, rifle cartrides (for what gun, I wonder? the Positron rifle used fuses, not cartridges), shotgun shells, and an N2 Mine. The N2 mine amuses me greatly, as it's a reference to that episode where Rei runs up and punches a nuke into an angel's face. They replaced it with a ballistic missile in the movie so more people would know what it was, but I prefer the older way.
It looks great, and I got an awesome deal on it because I didn't mind the weird alternate pain scheme (Zerogouki should be yellow, or blue, but mine is gold-ish).