As a point of comparison, last year there were high season fare sales on UA, albeit close-in, and I flew a high/shoulder season (early March) MR SFO-MEL for 658.00 all-in in K with a 24 hour return.
Remember when they dumped F Oz awards for high season this past August (8/15, to be precise)? Thank you FT

There were R9's everywhere...
Pat