这169$包括duty, sales tax(13%) (for personal, hst,13%, for business, gst,5%)and handing fee.
Duty ,if it's electronic, sometimes 0% , but for car accessories is different, maybe around8.5%,check the link.
Now you have to check how much handing fee(included customs clearance ,and customs clearance fee can be 40-100$)
Of course, you can appeal to DHL.
http://www.dutycalculator.com/get-import-duty-tax-rates/