Silicon Power PCIe M.2 NVMe SSD 2TB Gen3x4 R/W up to 2,200/1,600MB/s Internal SSD - SP EUROPE / FBA

Agree, should be below £50

And?

Please point me in the direction of an SSD that has not had any faluires.

Also, him buying 2 drives at the same time and them both being faulty is massively unlikey.
What's more likely is that he has no idea what he is doing.
Probably installed them and they didn't show up in Windows because he hadn't initialised them and created partitions (or he works for another budget brand, lol).

I've installed a few of these drives over quite a long period of time, never had one fail or have any other problems yet. (edited)

Well the first year you'll deal with Amazon.
I know SP have a branch in the Netherlands, whether you ship RMA'd parts to them or not I have no idea (I've not had a single SP drive fail yet ). (edited)

Not had a problem with our SP drive.

Only if you really need higher sequential speeds for transferring large files frequently, otherwise you're spending the extra £7 for nothing as general performance (OS/apps/games) will be exactly the same.

Then again, if you want higher speeds and have a gen4 slot a gen4 drive would be a better option (obviously for more money).