I would say most listings have been looked at many times. Chances are they all have been discussed on this forum confirm to be "headache", "problem" or "overpriced". Hence taking longer to sell.
Sellers will always hope to maximize the sell and most buyers are savy enough to do homework before spending on potential money pit. A clean/well care for example will not come cheap but they less likely to have major issues. I also find some prices are out of range but seller has the right to set their price. Most are not in a rush and will continue to enjoy while they wait for the right buyer.
Good thing is that there are plenty of cars in the market but solid homework is a must and finding a clean car is not easy. You don't want a money pit with these cars. Or at least pay less for a fix-a-up project.
Best of luck on your search.