e-commerce for photo

Hi. I’m going to open an e-commerce site to sell photography. For an event, i can make 400-500 photos, so is very hard to add manually each photo, one to one, like traditional eshop site.
So i’m searching a plugin or hack to realize an automatic web-gallery, and sell photo with different size options, in an easy way.
Do you know any plugin/hacks to do it?

Thank you very much.