If you list directly from the SELL page on ebay take your time to read all the small lines, there are lots of things you can 'adjust'.

There is on both LOCAL & INTERNATIONAL a small blue line that allows you to click on it to add handling costs. Or you could just build them into the price of your item.

Make sure you  also add Registered as an option for buyers [Add Another Option === I think that is what it reads under the First Postage Option line, click on that & scroll through the list of options. Then if your item goes for a high price you can remove Standard Postage & only leave the Registered option when sending out your Invoice.

Don't GO NEAR TURBO LISTER at the moment it is a nightmare !!! It will drive you nutty.