Welcome to the Bunnings Workshop community. Thank you for joining the discussion.
The wine barrel water feature you're referring to is known as Water Magic 48 x 67cm Oakden Barrel Water Fountain. It is available for purchase. However, I recommend calling your local store to make sure that they have it in stock before going. It's easy to install and operate and is supplied with a low voltage pump, fittings, and a 3m power cord. My number one tip with this water feature is to clean it often and never operate it without water as it will overheat the motor.
If you need further assistance, please let us know.