Yeah, as soon as I saw it I searched amazon, not for headphone splitter though. I just searched for the brand.
Amazon Basics do their own it seems.
Those are TRS the one I ordered was TS, I ordered an Amazon one too, just to check. The other was £7.50 from DV247, not sure if it will make much difference. Stereo vs Mono basically.
I’ll let you know, seems so though.