I read over there reviews no complaints of fake parts, mostly any complaints were slow shipping, I am wary of buying fake oem parts off of amazon, ebay, etc but that is mostly for small easy to replicate stuff like knock sensors for instance. there ebay reviews were about the same, mostly slow shipping.
not sure why this generation cv axles leak, I already had to replace one at about 100k, on my nbs I never had to replace one and I drove the literal piss out of it to 312k
same with the brake calipers had both the front ones leak before 100k