Because you are selling second hand items and there are many sales for new items at the moment. One of your items described as "good condition" looks like it has stains, and another is damaged. The damage mentioned by you, but even the op shops will not take damaged items, so why would anyone buy a damaged second hand piece of clothing? I wouldn't. The only second hand items I have ever bought are very good quality and very good price, look like new, and something I particularly wanted that I couldn't get elsewhere cheaper. Mostly, new clothing is not expensive and I think most people would prefer it, as well as being able to try the item on first.