Correct.
You will pay the 10% GST, plus fees of about $100-$150.
There should be no duty payable on electronic components, although I've seen small values (<$5) on some of my paperwork. Triggered by one of the HS codes I assume.
The customs processing fee is higher (~$80 extra) if the value of goods is over $10,000. I've only had to pay that once... and it was with an LCSC order in 2022. Yay chip shortage!
The customs paperwork listing the charges is super complicated. From memory, FedEx just give you that plus a total to pay, whereas DHL give you a breakdown summary.