Man10United 
Dodo is offering $20/mth off select plans for a 12 month period.
This bring the 25 Mbps plan down to $48.90 per month, which was the cheapest I could find for a service that is longer than 6 months.
Not sure if it is worth the risk with Dodo, but for that price I might give them a go.
If you need a router you can BYOD, or they have the following deals:
Essential Modem
$8.90 /mth for 12 months
or $99.90 upfront
Family Modem
$11.90 /mth for 12 months
129.90 upfront
