Show in which countries the album is available and in which it is unavailable. Additionally, show the label and UPC code. The script is also available for Deezer here.
Install the script using Tampermonkey or another userscript manager.
If you're using Tampermonkey, make sure to enable Developer Mode. - tutorial
You can set your default country by editing the script. This small feature highlights your country code, making it easier to spot. For example:
const YOUR_COUNTRY_CODE = 'GB';