eBay Total Auction Price

Summary

This userscript augments the functionality of eBay and runs in an userscript manager such as the Tampermonkey add-on for Firefox and Chrome.
Inserts the eBay auction price + shipping = Total price in the auction listing.
To streamline the process of reviewing auction items.
Initially this script was developed on the UK eBay site, and I have extended functionality to International eBay. Or at least all the sites that I have been able to test without eBay redirecting me to a default .com site.

Due to the number of sites and pages across the eBay empire, expect there to be pages where the script doesn't find the prices to add up.
For the above reason eBay Total Auction Price script comes with no guarantee that it'll catch every single instance of a total price.
However, if you find a page that needs updating then create a new issue including a link and a short description so that I can investigate further.

ebaytotalprice-userscript.user.js
ebaytotalprice-userscript-min.user.js
Greasy Fork
The userscripts folder contains both minified and regular bundles of the current stable release. The minified version offers a slight performance improvement over the regular, else they're functionally identical.
In case you didn't already know, you can install userscripts directly from the GitHub Raw view of the userscript file, view the script here and click on the Raw button.

Hello, I'm friendly, and I welcome discussions and pull requests related to this repo. Feel free to open a discussion if you'd like to chat about something.
For a cursuary review of the code you'll find all the functions and methods are bundled into the ebaytotalprice-userscript.user.js file without comments but no mangling so should be easily readable.
If you'd like to develop and build for the project you'll need to request access to the developer branch to pull from, and the @subz390/jsutils library for source imports. Open a new discussion about that and we can figure out the details. I don't automatically make those publicaly available due to the maintenance efforts required to do that and my limited time available to do so. However with more people to maintain something like that it would be a more viable option.
I only accept Clean Code contributions that are in the same linting style and conventions as this repo and @subz390/jsutils library. Put simply you should be aspiring to create human readable source code, and leave the minification, mangling and other JavaScript optimizations to Terser.