I was looking into moving to another provider as I am looking at saving some money.
I found this on their facebook page. Free sim(usually $20) and first month free.
Free SIMs - Order from the 17th to the 31st March and pay nothing for your SIM - Save $20! www.vaya.net.au
Possibly trying to get some customers back after the recent mass exodus of live connected users (owned by vaya) after the plan hike, mailing stuff ups, billing stuff ups, and general poor handling.
Be mindful of the per mb billing, if you come from a per kb billing you'll possibly find the same data limit very restricting.