I didn't see this posted elsewhere on the forum, so hopefully this isn't old news. When the ETIAS is finally implemented, it looks like it will be slightly more expensive. Although the article is directed at Canadians, I believe this will also affect tourists from the U.S., Australia and other places. I was able to read it and hopefully it's not behind a paywall for other areas.
https://dailyhive.com/calgary/etias-fee-europe-2026
Looks like I'll be able to avoid the fee as I'm beyond the age limit, but will probably still have to register.