I always specify shipping by USPS. Canada has a remission on taxes if the value is less than $50.
UPS and FEDEX will charge you a brokerage fee . The USPS flat rate box is cheap and you can get a lot of stuff shipped.
There are a number of legitimate ways to get items shipped into Canada from the US. The problem is usually more related to finding a cooperative seller that will work with you.
Dutch
2001 GBM Landau 34' Class A
F53 chassis, Triton V10, TST TPMS
Bigfoot Automatic Leveling System
2011 Toyota RAV4 4WD/Remco pump
ReadyBrute Elite tow bar/Blue Ox baseplate