MEL-PER went from $299 to $349 to $399 to $449 to now $499. It's been a very very steady rise (every few months basically).
QF are a few dollars more for 'flexi saver' but 'full flex' on QF is $1199 (and J Saver is $1299, so you can see why QF do it that way).
I only buy flexis 4 times a year for my 4 upgrades, but from $600 return to $1000 is a steep rise, no matter how good the trans con J service is (and considering I can get NZ-US in Premium Economy for not much more than double that and it's 28-30 hours of travel vs 7 1/2, even though it's only Y+).
Couldn't agree more with your sentiments.
I travel to Perth 6-8 times a year for work and convinced the company in late 2012 to book me on Flexi fares so I could upgrade with points and use my 4 comps..they were fine with it when it was $300-$400 and I was netting J SCs at 80 a pop with decent points (once I even got the full 9000 points as if I was travelling on a full J fare)...but the official stance this year is no flexi fares given the costs have increased so much so its back to Y for me. And I cannot even bring myself to spend 20k points on a J upgrade with Qantas on a red-e-deal as its just not worth it. I think VA caught on to the fact that so many of us were using points and the free comps on the Coast to Coast that it wasn't working out for them. And given their product compares and if, not, is better than QF on the new aircraft, if you're going to spend for a full fare I would certainly be looking at VA as much as I would QF unless retaining status was my focus.