Unless you go USPS / Canada Post / expedited (or the other more expensive options), you're gonna get hit with brokerage fees, and it sucks.
You could get around the fees by declaring under $20 or by stating they're warranty/replacements (which I read it works, as taxes/brokerage fees are waived if they're warranties).
Generally, stay away from UPS, they drain your $ like vampires on plump juicy necks.