Maybe you've come across these things, maybe not, but I was interested to know if any of them are reliable, i.e. legit? And, how exactly do they get you the deep discounts for premium cabins?

All my travel is paid for by my employer, but a friend of mine got a quote of $3980 in First Class on Lufthansa from YUL to TLV (via ORD, FRA)
When checking LX's J class price it came out to $4001 (via ZRH)

So, is this too good to be true, or is there some substance to this.