You realise that while ebay boasts SELL FOR FREE, using promotions IS NOT FREE.
I would suggest avoiding promotions until you have some experience of selling, there is a lot to learn, but adding BEST OFFER to auctions or Buy it now can be useful.
Depending on what you sell selling is slow and has been for months, before ebay introduced their money making schemes, of making buyers pay for the protection they already had for FREE.
Looking at all the BRAND NEW items you have listed you are not a private seller and should register as a business seller, where different rules apply and you do not have to use Simple Postage.
