I am looking at their catalog they have shipping rates by Purolator courier . To Ontario its $13.00 for 10 lbs and under then add $0.30 for each pound over 10. Your best bet is to give them a call . Its toll free. They should be able to give you all your options. They list that gun @8.75 lbs. lets call it 9 add 3 more pounds for packing material you end up with 12 lbs which should cost $13.60 to ship. by Purolator.
PS. if you buy from out of the province (Ontario) you don't pay the provincial sales tax only the GST. Alberta doesn't have a sales tax. You save 8% or $52.80 that puts you $39.20 to the good even after paying for shipping than buying it in Ontario .