Most I've ever paid was 175,000 SM for round trip on the Air France Concorde.
Also paid 165,000 SM for ATL - JFK - DXB -- travelling on Emirates First Class Suite.
Those were the great days of Sky Miles.
Last year at this time, I scored 2 tickets in BE to DXB on the 777LR for 90,000 each. (25% off miles AMEX promotion) Looking back -- that was a great deal compared to what is available this year.
Now, have to be extremely lucky to get a coach seat to Europe at those levels.