Hi,
I've just built a Gallery manager for nopCommerce. If there is some interest, I'll document it and stick it on sourceforge for download.
There is a blog, which explains it in a bit more detail and has a few sample screenshots: friendly-pop-up-image-gallery-for-nopcommerce/.
The basics are:
Integrates into Content as a new section, Galleries.
Uses Slimbox.
Just needs a single div in the markup to invoke, so is very user friendly.
The site it is in at the moment is v1.6, and is due to go live this week, so once it's up, I'll update this post and you can see it in action.
Comments and suggestions welcome.
Thanks for reading...
Ed.