I think better not to send to me and I pass the fish to them. As will be cause misunderstanding from those get the betta by me.
I suggest they will still collect from transhipper.
The money they can transfer to me and I transfer to u by paypal.
As I will add additional usd$5.00(around SGD$6.50) for helping them do per transaction of transfer by paypal. Example; they have to pay you usd$30, then they have to pay me usd$35 with convert rate of 1.31(follow PayPal rate of USD change to SGD). So they pay me SGD$45.85.
Their fish still send to mainland(Singapore transhipper) for their collection.
Do consider and see how is the plan