I am usually putting the things on for 1/5th to 1/10th of what I paid for them, some items have a notoriously low resale price, like Temperley. What I noticed is that on JC I do tend to list a bit higher as people want to negotiate, if you list too low they seem to think something is wrong with it... Odd...
Never tried the relisting, but good point, yes, visibility or listing at a quiet time might be the issue,
I have honestly no idea, I invited her to report me and asked her to let it rest, I made it clear that I am not selling for the price she can afford, she then decided I have a problem, after she plastered 27 messages (you do have to reply to each of them or you lose trusted seller status), I ended up just posting "See above, thank you, hope you find the item you like for a price you can afford" as a reply to avoid getting into a spat but she totally went nuts, I called VC, they said they would remove her comments, 4 days later still not, so I pulled the item. I think it was just a frustrated teenager who wanted something badly and was super stroppy that her wish was not my command.
On the bright side, a friend said she now instagrams all of her stuff, with a link to the site where she is selling, but a lot of people contact her on instagram, I haven't asked much, but apparently in a lot of cases people are eager to cut out the middle man, not sure if I am comfy with that, as I do like the idea of the item being checked and then the sale is done.... I always wondered about the "general signs of wear" description because it is actually very non descriptive, but maybe that is also a reaction to VC being really arsy about stuff?