it's Australian Austrac law so applicable in all states my understanding is no ID needed for a purchase under $5000 but you might be asked for ID if combined purchases over time go over $5000, or if the dealer thinks something shifty is going on (like you, your wife, brother and mother-in-law all make purchases of $4900) Depends on the dealer too - some dealers ask for ID for any purchase - even $100
Interesting. How would they know you have come back if they have not logged your identity? I'm talking on a monthly basis, not walking out and back in again. Does Austrac law say each transaction? Or accumulative?
There are few hard and fast rules from Austrac, it is a "risk based" approach which means it is up to the dealer to assess the risk of something dodgy going on. IMO once a month is not suspicious and does not require ID