Well, had a proper go today at buying features.
In total 13 feature, 11 bought for $20 - $88, 2 from normal play.
Out of the 11 bought features, i gambled 4 in straight succession, first 3 bought for $20 at $0.40 bet didn't even go to 12FS. Number 4 for $30 at $0.60 bet went up to 12 and then "zilch".
That leaves 7 bought features where i took the 8FS. Only one gave me profit and that one I bought for $33 on a $2 bet, so was quite well down. It paid $56.70.
Winnings from the other features ranged from 11x - 32x bet.
On the 2 genuine features I took as well the 8FS, one paid 139x bet and the second 84x bet.
Conclusion (for me personally): Don't buy feature unless desperate, do not gamble feature and last but not least, do not play Extra Chilli regularly.