Following the topic of using Avios in WT, which of course we all constantly say is a waste of money, I today booked a LHR-JNB-LHR redemption in Y next week using half Avios/half cash for 25,000 and just under £600, as compared to over £1800 cash price - i.e. getting ~5p each for them.
Received wisdom isn't always as wise as we think!