Buy 1 of those shit PC cases with free 400w psu (which probably really does 300w).
It will pop sooner or later, but what do you expect for that price – on the plus side they can run for 3- 5 years untill they pop, the downside is they could pop after 3 – 5 days, but atleast then it would be under warranty.
I’d personally use Enermax, but as you’re not looking to spend £££ then it ain’t happening – my Enermax for my BF1942 rig set me back £120 -_- They can be had for half that with more features these days though.