After many hours spent on searching coins on eBay I finally found a solution that does it for me. It might useful for you too, so I decided to create this topic.
App is called Deals Tracker for eBay and can be found here. https://play.google.com/store/apps/details?id=com.tomlocksapps.dealstracker.ebay
It's for Android devices and really does the job. In the app there is an option to add subscription, which is the desired item/coin name and after that you will be up to date with the latest auctions. It works similar to eBay saved searches, but for me eBay saved searches are too buggy.
