1: They're fairly highly priced for what you get.
2: They're usually unpainted resin. This means a LOT of work is involved in getting them presentable. Filling in bubbles, removing flash, and then priming and painting them.
3: You'll need a fresh body for most of them. More expense added onto 1.
Well, I finally found a garage kit I wanted, at a price I thought was OK.
Presenting Vampire type MMS Naughty Kiss.
She started out as a set of illustrations by an artist on Pixiv.
http://www.pixiv.net/member_illust.php? ... d=17753759
http://www.pixiv.net/member_illust.php? ... d=17799129
Found a couple other pics of his via searching, but nothing I can safely post. The guy has some...interesting kinks.
The illustrations impressed a kit builder, they asked for, and received permission, to make a kit based on it.
They dont seem to have a website, but you can see some more of their creations over at FG-Site
http://www.fg-site.net/members/833/gallery
They also have some pic galleries out, but again...sudden porn without warning with that.
So, after seeing all that, I decided I really REALLY wanted her.

A quick note to my proxy (along with a bit of panic as I realised I had 35 hours to get a bid in), and the bid was placed. And bam, success!
Now, I just have to wait for her to show on my doorstep so I know exactly what the next step is.