Hi Lizzy,
Thanks for your input. I think this is a great discussion to keep going too. I have been trying to push my etsy photography shop for some time now, but alas I still haven't had much success.
I guess etsy is just not the best market place for photography, particularly high end photography. It's a mass market here, and it'd hard to compete. But I believe etsy can cater to the high end market if it is used as a selling platform for other avenues. Say for example you are exhibiting your art photography in a gallery or promoting your work on your own portfolio website, facebook etc and are simply using etsy as a means to selling to these customers online. Maybe we need to start a thread about ways to promote photography and bring in customers? I'll go start one :)
Because as you say, the market place is saturated with cool, cute and cheap prints. It's hard to stand out from the crowd. But i think that's the way to do it, stand up and make some noise to be noticed. Here are two examples of successful photographers on etsy that I'm familiar with. Both of them I've noticed around the social network scene a lot, and it's my guess that they are reeling in customers due to this. They are popular and they've managed to gain a following.
www.etsy.com/au/shop/ellemoss
www.etsy.com/au/shop/debbiecarlos
In regards to print sizes, i'm not certain whether less or more is better. But I'm thinking giving at least several size options is a good idea. And catering to specific frames sizes obvious, people often search for a picture that will fit into a frame they already have or one they can pick up cheaply from Ikea. I also make sure I always include a note in the listing description stating that custom sizes are available.