Since everyone is sharing buffets then I might as well share my favourite. We always drop into Govinda's whenever we're on the Gold Coast. They have a good range of hot food and salads plus their home made drinks are healthy and very good.
Their usual price is $14.90 for all you can eat meal without drinks but Groupon are currently doing a deal for $16 that includes meal, drink and a $5 voucher to use towards the next meal. Pick these up during a sitewide sale with cashback from Cashrewards/Shopback and you'll get some good savings!
From Groupon -
Highlights
Enjoy a range of vegetarian buffet options such as hearty lentils, Govindas’ famous kofta balls, pakoras, mixed vegetable Indian curry and a variety of salads
Dishes are cooked daily with all natural ingredients
Wash the meal down with a hot or cold non-alcoholic drink
Bonus: $5 voucher to use towards the next meal
Probably slightly biased here (being vegetarian), these guys always serve up fantastic food, along with the Burleigh and West End restaurants of the same name as well.