For one trip, I must go through a US travel agent (company policy). As discussed on another thread, I am considering doing something weird, i.e. adding a leg to fly the new B747-8. I therefore check the price on my own before asking the TA and got of USD 3’715 (lufthansa.com – checked yesterday and today and got the very same result). But the TA quoted me USD 5’825! Told them to check on lufthansa.com: they got a price over USD 7’000! And, yes, for the very same flights on the very same days.
In the past, IATA pricing was making this possible. But nowadays, I have to say I am quite astonished this is still possible!