Does BA16 ever go on sale SYD-SIN-SYD in World Traveller Plus?

Does BA16 ever go on sale SYD-SIN-SYD in World Traveller Plus? If so, what sort of pricing does BA put out?

Have you checked the Australian ba.com web site? Sales fares now on, WTP fares from AUD1,255. 

A-ha! Thanks! That's cool - worth thinking about.

Sorry about that, I just realised I don't check it as often as QF's website; I should have asked more specifically how often it goes on sale.

They had a sale just earlier this year in February. The fares were cheaper then though.

Ah, no wonder. I wasn't looking back then. Thanks, though - gives me a rough idea of their sale cycles.

From my experience I have always, always received a 'limited offer to upgrade' via Manage My Booking which has ended up vastly cheaper than buying World Traveller Plus from the outset.

How much did it cost, on average? Also, does it apply to sale fares in WT?

FWIW I didn't receive an upgrade offer through MMB for my CW flights (on sale fares).