Wow. For us, no business travel, but a quick look at the site shows that for a return trip to Sydney with Jetstar in Economy (which could be as low as $100 return, up to $200 return), I'd get a minimum of 2,000 points (the 1,000 minimum points guarantee one-way). I have a friend in Sydney who I plan to visit in a few months, and the same for my grandmother in Hobart; on top of that, another 200 points by using my Woolies EDR card. That's 2,200 for $200 spend - an 11-to-1 ratio (much better than anywhere else!).
Just FYI, not commenting on whether this might be a good earn ratio for flying or not, but credit card sign up deals are much more lucrative... For example you often see bonus deals for say an ANZ card and for about $95 you can get 16,000 QFF points so 168-to-1...
I have gotten a couple of credit card deals but I think the best earner opportunity was an insurance deal i saw on here and which quite a few of us signed up for and got 40,000 QFF points (plus about 132 for the 3-4 months of monthly payments) for about $132... There have even be much better deals that people on here have gotten several years back but the credit card companies have wised up i think to not allow deals to be so open ended, but some interesting reading...
But look for point e3arning opportunities that people find on here, its amazing what they find sometimes!!
As for me and QFF, i signed up in 2003 i think when as a couple we did a couple of RTW trips in '03 and '04... Think from one of these i made it to silver but then didn't even fly again the following year or use the complimentary Qantas Club pass...
Did little travel after that but seperated in 2008 and since then am trying to do some decent travel every year, so 6 weeks around Europe in 2008, 3 weeks around Asia 2009, 6 weeks around Europe/North Africa 2010, 2.5 months around South America, NorthAmerica, Europe and Africa in 2011 and 5.5 weeks around the US/Mexico and Europe this year...
I have a decent paid job but have actually taken several weeks of unpaid leave or bought extra leave in the last few years so has reduced my take home pay a bit, but live somewhat frugally and when i travel i stay in backpackers or with people most of the time which reduces costs massively... Took my first business class flights this year as i found the US Air deal on here that made that feasible (say $2000 for business class to the US and Europe) and have since bought enough miles for my next trip in business as well to two continents...
I mainly save up my QFF points for 140,000 OW award trips (which i also found about on AFF), which is partially how i took my 2011 RTW trip, i personally find them the best value, nearly have enough for my next RTW trip...
I don't chase SCs as i usually only do one big trip a year, so even if I earned enough to get to Silver (it gives almost no benefits i use anyway) but would probably run out before i left on my next trip, so as i said i don't worry about SCs but do look to earn points any which way i can, and generally value them at about 1 cent/point (even though i probably get better value than that)...