i can't see whats wrong with it. not at that price.
i have a nismo style kit in my garage, quality on its fine, was already fitted to another car before i bought it.
yes there is a difference in quality with some GF kits, just make sure its a good copy, ask him what brand it is, as it should have a makers stamp and get it checked on here. for all you know he bought it direct from CS on here. as he sells on ebay as well and i know his kits are good. even the original nismo is GF.
i don't get all this player hating stuff on things that are copies, i bet if you lined up a load of cars mixed with real and copied nismo kits, that once fitted and painted 95% wouldn't be able to spot the difference.
if its a good copy the only difference between original and copy is the price tag. both come out ofa mould and both are made from GF. just avoid the cheap cheap ones as they tend to be a thin GF copy, suffer from weak points and air bubbles. and require a hell of a lot of prep work to get them to fit.
a good copy is exactly that ... a good ... copy.