A laptop hard drive can held in place with one screw only, as long as you don't share a trampoline with your PC they are light enough to stay in place if the PC itself is kept stationary its not ideal but if it works then who cares!!
Quality workmanship right there. Again, for two pounds more you get a faster, larger HDD which doesn't require bodging.
Exactly what is bodged, depends how anal you are really! the extra £2 is a moo point the build I put together was a suggestion at what could be built on a very tight budget
Depends on how much you like having a warranty.
And no, it's not a moot point, it shows how you think when assembling a system..
But yes, let's agree to disagree. I have little interest in carrying on 'discussions' with someone who emphasises price over quality.