Cost to Upgrade from PS Elements 2022 to PS Elements 2023

It's on sale for various prices right now- but generally $59 right now in the U.S.

You don't "upgrade" 2022 to 2023, you purchase the latest version.
During the checkout process you will given the chance to check a boxz that says you own a previous version.
When it's not on sale, like it is right now, you typically will get $20 knocked off during the checkout process.

You're not going to get an addtional $20 knocked off when it's $59- which is pretty darn cheap. 

https://www.adobe.com/products/photoshop-elements.html?gclid=Cj0KCQiAsoycBhC6ARIsAPPbeLviIYFQ498Csr9Ul1ZPYu3NeX0tljyWwbgltVNvGaUPcUcJkYXhkQMaAqoPEALw_wcB#marquee-video?utm_campaign=cv-nwmp-ae2023&utm_medium=cpc&utm_source=google&utm_content=AE2022-Sitelink-06&utm_term=photoshop%20elements%202023