Got mine directly from the Paddling Centre in SA, delivery time was about a week and price was more than competitive. If you want one now that's similar, see Dean/Yanda at Oceanpaddler.
Re. compliance, according to NSW Maritime, surfski paddlers are not required to wear a PFD (1,2 or 3). So unless organisers impose a specific Aust Standards compliance PFD requirement this isn't an issue.