Instead of charging fellow etsians to improve their photos, why not just share the tips for free? ;)
It's hard enough for certain shops to get sales. The last thing they need to is pay a whopping 3 dollars per picture. That can be $15 dollars a listing.
This is a fortune for people who can't even get sales, or would be a fortune even for people who do get sales. And the people getting sales have already figured out all the free tips on forums and free photo editors that are easy use and have already done this for themselves, and their pictures look great.
I'm sorry but I just see this as trying to rip people off, I don't think you're going to get anywhere with this. The reason I am posting this is because it was only a week or so ago I figured all of this out on my own, and I am a new shop owner.
Tons of free tips in the forums, as usually the only problem is you are not using the right camera settings.
You can also find a free photo editor that works WONDERS at
http://www131.lunapic.com/editor/