As you guys know, one of the better ways of transfering money is Paypal, since you might be able to get it back should the item never show up on your doorstep. Unfortunately Palypal generally charges a 3% service fee.
However, if you top up your paypal balance and then use that cash to pay for the transaction, it now becomes a fee-free transaction

All Singapore banks except UOB can transfer cash into a paypal account, which takes up to 2 working days to complete.
Hope its helpful information!