I've had very few problems over the 10 years I've sold online. For damaged things I have never thought anyone was 'misrepresenting' and it happens very little - maybe once a year.
The best story is a woman who bought a bracelet for a friend. It was made with very high quality materials (sterling silver, Swarovski Crystals, and Swarovski faux pearls) The cost was $34.95. I have a 30 day return policy if my jewelry breaks, as the most common reason is I may not have a good crimp on the wire.
Well - 15 months later the customer emails me VERY upset because her friends bracelet had worn away the paint on the faux pearls. Turns out she wore the bracelet 24/7 for 15 months. She wanted her money back. I told her to return the bracelet and she could get credit for something different - which she did, I also offered to restring it for her at no cost. The bracelet did look terriible as the paint had worn off the pearls - but this is to be expected if the bracelet is worn continuously for over a year. I just replaced it with something else and moved on.
However my biggest problem by far is people stealing my poems. I have poems that I've written for friendship, mothers, daughters etc - that go with some of my jewelry. I'm always finding them for sale on ebay, etsy and personal web sites and one person said she bought my poem in a jewelry store. Copyright issues are a nightmare.
Carla
http://cobwebcorner.com