security camera systems

[ebv8]

i'm thinking of buying a security camera system for my home
after joining a local facebook group of my area i keep finding out about crap going on and i want to protect my things or at least help catch the kids doing it

I have $65k worth of toys insured and $10k uninsured i worked out and i want to keep them all

i was looking at generic 8 camera systems from kogan for about $350

are they any good? can you clearly see faces from about 10-20m? do they work at night ok?

and do i run it through tv screen or are they only an online app viewable

i don't want to spend heaps of money just want one that works good enough