Koodo should have a special US roaming rate for phones on the same family account. For example when I go to the US for a short 1 or 2 day business trip, I would be able to call the companion phone on my account for a reduced rate (say 25-50 cents/min). This would be an option instead of the 3, 10 or 30 day rate and much more desirable than the ridiculous $1.50 per minute rate. This would only apply to the family phones on the same account.
This would be a big advanage over the 3 day $10 US roaming rate for those same day shopping trips to the US and you only need to make 1 or 2 calls.