What ever happened to the principle of seeking a flag and getting promotion? If you're in the comp you're in it to win it, surely? If you make the GF you should go up. If you can't go up because you don't have numbers or the cash (the latter would suggest you might be trading insolvent), should you have any choice other than to fold for the season, get yer act together, and start off again at Div 7. That's incentive enough to either make it work or make a tough call.
IMO (and I am not arrogant enough to think this is the only way to look at it) spend the money on developing a culture and a feeder source. Juniors, or linking with local schools to develope a good relationship, or both, is where the focus should be, not throwing money at flags and blowing your reputation. Yes, it is inevitable that some inducements need to be made, especially as you climb into higher grades, but within your means and with eyes on next year and beyond. Premierships are only worth winning if they build your club history and culture, not if they send you broke.