Hi guys

Google has indexed none of my images here a month or so down the line.

What could possibly be wrong?
I even bought Leo's image map plugin.

Have you submitted the generated sitemap to google?

Yes, months ago.

I use Yoast plugin and Leo's plugin and have both submitted to Google via webmaster-tools ... works perfect for me (I don't have the exact numbers in mind, but last time I had a look at it most of my images and pages were indexed)
BTW: Did you know that there is a dedicated Symbiostock-forum now: symbiostock.org
You might get answers faster over there.

Going to your page I don't see any menu/categories whatever to find/see your images. Would google struggle here as well?

When I google "site:royaltyfreestockphotos.co/" I find some of your image (not that many, though), so at least a few have been indexed.

another factor is you haven't setup any networked sites, so you won't have many sites linking TO you, which is another factor google considers