>>106273867
Sounds like you know what you're doing, and £11 is a good deal considering the warranty.
If you want a high quality power adaptor at some point, the Steam Deck charger is excellent and reasonably priced (you get one for free if you buy their USB-C dock) and Apple laptop chargers are generally good.
The free Xiaomi chargers tend to be excellent, however they require their special Type A cable to deliver high power, and I wasn't able to source genuine Xiaomi cables yet (apart from the one I got with the phone).
If you want exceptional features for cheap (such as 5V5A), there are GaN adapters "for Raspberry" on AliExpress, I got a couple and they are very decent.
I just found this on AliExpress:
$10 https://www.aliexpress.com/item/1005006361066117.html