Rock Auto and Canada shipping

Have been buying stuff at Rock auto for at least 3 years .I go to Montana Shipping outlet at Sweetgrass about 1 hr from Lethbridge .Very reasonable receiving cost and nice people .The last 3 times with purchases of $260/180 and 140 got passed through border with a "have a nice day" and no gst charge (no pst in alberta) . Rock auto has been great with bundling shipping to reduce cost and products as advertised . Easy return policy but cost to return using Canada post is very expensive . Nice cafe in Milk River so my wife and me make it a day trip . Last order for KYB shocks saved me about $140 over local suppliers so $30 in gas still made it worth the trip.