Start from the USA !
CP*1 (22K miles)
Originating Canada = US$6458.
Originating USA......= US$4785
CP+2 (26K miles)
Originating Canada..= US$7716
Originating USA.......=US$5740.
Starting from USA could mean : SEA-YVR-... onwards, but return to YVR-then SEA.