I sold on Ebay for 20 or so years. It used to be much easier, more pleasant.
It was also said that the optimum time for ending an auction was Sunday evening, however I never fund that to be true, except for anyone that did the RTDC or MDCC charity auctions where all listings ended on Sundays. My stuff sold for the same price regardless, I tried it out when I had more than one of the same to sell.
I also used Ebid, many other sellers went there when EBay started to go down the pan, and still do. The level of help you get from the owners is far superior to the rubbish you get from the Ebay support.
Taking a break now due to ridiculous buyers and the annoying payment system on Ebay and am rather interested in VInted, will also be returning to Ebid after a break.
Ebay is not what it was, they have been treating sellers like crap for too long and allowing chancers to get away with it.
Annoying details you need to fill in when listing - they are the bits that buyers look for allegedly. If sellers would put measurements of clothing in listings they would sell more. Lazy sellers with just a crappy photo or two are less likely to make a sale if there is a description that reads 'Next dress, 12, worn once'.
So, if you plan to sell, you do need to tell people about the items. If you can't be arsed then give it to charity. Measurements, make, fabric type, colour are the minimum, and answer questions if you are asked because a lot of people don't.