Yep.
Lots of scammers out there.
A few points, some already mentioned in earlier posts...I've collated warnings from some of the earlier posts by everyone here.
First: "If it seems to good to be true it usually is"
Paypal, as far as I know, will not cover purchases through Gumtree.
ANZ (and probably all banks) will NOT refund money paid directly from your account to another account - even if the account name doesn't match the account name you put in. They will take about 6 weeks to "investigate it", then send you an email saying they have given up.
Always go to your bank and confirm the name of the account matches what the "seller" has given you - if it doesn't, its a scam.
Check the BSB number online - if its a Prepaid card - ie woolworths, etc - its a SCAM.
These cards are exceptionally easy to get apparently.
Use a reverse image search on the images used in the ad.
Pretend to the seller that you, or an agent for you, happens to live right nearby, and wants to pick it up in person, and will pay cash.
If the give you some story about them being away working at the moment, or the wife doesn't want strangers coming around, or the like, its a scam.
Ask if the will accept payment via Paypal, while it may not help, if they are a scammer they will tell you a story as to why they don't use paypal.
If they state the Paypal fees are too high, offer to pay the paypal fees as well.
If they still refuse, they may be scamming.
If the seller is recently registered on the site - gumtree or whereever - you are taking a chance.
The scammers can easily create new accounts, use them briefly until they get reported, then create a new one.
While the person may be legit, its a serious warning flag.
Don't buy new products from countries that don't manufacture them.
I know one guy who lost heaps buying a bicycle from Indonesia, as it was around $200 USD less than the manufacturer's site.
He paid, got a "tracking number". He checked the tracking number on the freight website daily - it eventually said it had it arrived at Aust. customs - but it never did.
Turns out the frieght company was just another part of the scam - the freight company doesn't even exist.
Ask to call them on a land-line - at their home or at their work.
These are harder and more time consuming to get, compared to prepaid sim cards.