Probably for a canadian, a six month SF2 subscription is all you need and cheapest in the long run. $600 US. Just phone and they give you a 24 digit code to punch in. That is after you have upgraded your SF1 ready ITC receiver to SF2 ready for $2000-$2500 (another code to punch in).

Now you have an SF2 ready and subscribed receiver.

But...

You also need to have an SF2 autotrak code or keycard.$3000-$4000 (another code to punch in).

Quite pricey I know but, you get "addicted to accuracy"

Ran on SF2 seeding all spring. 57ft drill,with width set at 57.4ft and never used "shift track" all spring.

PS..  about 5 inches of rain in last 4 days, and this evening about 6 inches of hail..

Cars dinged, crops butchered... oh well maybe next year.