Hi Daria! Thank you :)
On photography:
I don't know though, I have to disagree about pictures. I think that, if a shop looks professional with great pictures, graphics, packaging, and customer service (they've thought about their shop policies, have clear descriptions, etc), then people will pay more for their products; rather, you're catering to a higher-paying crowd. If you have stellar items and your pictures don't convey that, those people who would have paid $50 (for example), will look somewhere else.
Plus, each item requires a different approach. I have to photograph certain things on models because I just can't make them look right without someone wearing them. Other things are just on a tabletop and they're easy. Others have to be hanging or photographed as if they're being used. It's just so frustrating for someone like me who is, by no means, a professional photographer.