I don't think they will make u pay the gst.. Cos for me, during the time I paid for my $1500 deposit, they make me pay the extra 7% which is $105. Then my 2nd meetup with them, they ask me to pay up the bal plus 7% of the bal again.
Can we share with each other our full package details? I hope to compare the difference. My email is linzhenwei@live.com.
Could it be they have just registerd for GST recently? I sign my package last year Sep they do not charge GST at that time.