Looks like same case like what i encountered with one of the forumers in LYN Garage Sales.

To be honest, nowadays, online trading is gaining popularity as it is more time and cost saving.

And sometimes, we can really afford to COD for every buyers from different states and places.

One piece of advice for those trading via bank transfer and courier services, for buyers, please keep all details of the seller including bank account numbers, full name and NRIC if possible.

As for sellers, we have the responsibility to sell GOOD QUALITY items and not faulty items.
Always follow up on each deal and provide buyers with the Postage/delivery Tracking number (CN).

And as it is nowadays, most buyers always demand sellers to refund the money first before sending back any items which was found spoilt or faulthy. They give excuses saying that they are afraid of a possible con case or fraud.
IMHO, since the seller had sent out the item as promised, BUYERS SHOULD TRUST THE SELLER for an exchange or refund, ONLY AFTER ITEM HAD BEEN SENT BACK!

Just think, what if the buyer is a possible conman? He can easily notify seller that item is faulthy and demand a refund first before sending back item.

If a seller is stupid enough to refund first then wait for item to be sent back, chances are nearly ZERO.

As for buyers, in event of a seller that does not send back a NEW ITEM after faulthy one had been sent back, you can always lodge a report at your nearby Police Station.
If you had bank in a certain amount of money into the seller's account, you should be able to retrieve his personal datas etc.

But for sellers, we have nothing in hand besides buyers' mobile, email and address whereby anyone of those can be easily faked.

THESE IS JUST MY 2 CENTS.

correct me if u find me wrong!