Yes, you’re looking at ~92% tax right there. Final price jumped from ~113 dollars (584BRL) to ~220 dollars.
EDIT: A bit of clarification, when buying from abroad there’s a flat 60% federal tax if the thing + shipping price surpasses 50 dollars. Then there’s a state tax that can vary between 17-25%, which goes on top of the total taxed value. Part of the tax is literally “tax of a tax”
In India, usually they don’t demand a bribe. They will process your file slowly, with the understanding that you can speed it up by bribing them.
From what I understand, Pakistan does not properly regulate weapons. But it would still be rather stupid to threaten a public servant. If you are that sort of person, smiling at the official and remarking on his good health might be a better idea. A less aggressive trick is to let them think that you are from the press / have a camera or microphone / have marked currency.