Exclusive: Hidden in a cosy corner of the internet is a growing Facebook group dedicated to helping people build an unusual side hustle.

Thousands of Australians have joined the industrious trend of buying and selling snack vending machines for extra income, which can be a lucrative game for a lucky few.

The only problem? You might need more than a few machines to actually turn a profit.

READ MORE: Micki thought he'd lost $150,000. Then an email landed in his inbox

Do you have a story? Contact reporter April Glover at Google Play.