The first thing you have to know is that there are two main types of figurines- Nandroid and Figma.
The following is a Nandroid. It isn't proportionate in a sense due to the oversized head which makes it really cute anyway.
Bought this with nine others as a gift for Jaslyn heehee. My heart broke as I paid at the cashier though.
Some of them come with two or more heads for you to switch, which is kind of creepy I think. Some have huge weapons like machine guns or all sorts of fanciful gadgets.
Second, the following are Figmas which are more realistic and proportionate.
And the last thing that you need to know is that they are crazy expensive. I think of them as overpriced Barbie dolls, which are already overpriced to begin with. Of course, fans would throw rocks and argue otherwise. (Which I totally understand, by the way. It's like paying for a movie when they are available online, and buying branded goods although replicas are argueably close substitutes in terms of quality and design.)
You can get them at a discounted rate if you opt for a preorder though, but I've no idea how that works, or when and how it happens. If you're not a fan it's tantamount to paying hundreds of dollars for a a nice piece of plastic.
And yes, I'm not a fan. (: