Personally I think some are alright if you have got a use case for the miles and remember to switch after 6 months. Details:
All prices for the first six months only!
Mobile
Optus 5G. No lock-in contract.
50GB for $20 + 1,000 Points per month; then $35/month
100GB for $40 + 2,000 points per month; then $50/month
159GB for $50 + 3,000 points per month; then $65/month
NBN
Home Fast
nbn 100/20 - 100/19 Mbps typical busy period speeds (7pm-11pm)
$79 + 1,000 points per month; then $104/month
Home Superfast
nbn 250/25 - 250/23 Mbps typical busy period speeds (7pm-11pm)
$89 + 2,000 points per month; then $114
Home Ultrafast
nbn 1000/50 - 860/43 Mbps typical busy period speeds (7pm-11pm)
$99 + 3,000 points per month; then $124
$40 mobile plan is 2000 points.