Vaya reckons its $16 a month Unlimited S plan is Australia's cheapest way to get unlimited mobile calls and texts.
Vaya has reduced the price of its Unlimited S mobile plan from $20 to $16, but this has apparently been achieved by cutting the included data from 1.5GB to 1GB.
Further savings can be made by paying $174 for 12 months in advance.
"We recognise that while more people are looking to move towards BYO mobile plans, many still want the added security of a low price, capped, one-off payment," said senior digital marketing and CRM manager Jennifer Snell.
{loadposition stephen08}"Our customers can now have the best of both worlds and grab even more value with one of Vaya's new 12-month plans."
The closest comparable plans appear to be Kogan's $16.95 plan (also with 1GB) and Coles' $20 recharge with 2GB of data.
Vaya also reduced the price of its Unlimited L plan with 3GB of data from $28 to $26 a month.
Coles and Vaya both use the Optus mobile network, while Kogan Mobile runs on Vodafone's.
The three companies that actually operate their own networks — Optus, Telstra and Vodafone — charge at least $30 a month for unlimited plans.
Vaya's new pricing also sets a new and lower benchmark for the value of the unlimited calls included in bundles offered by companies such as Foxtel, Optus and Telstra.