Im interested in getting an iphone 3GS for myself. I went to Rogers today and it turns out that the plans are expensive (50$ a month). Is it possible to buy say, a used iphone, or an iphone in the US, then buy a sim card with a regular cell phone plan on it here in canada, and simply put it into the iphone? Different cell phone plans, such as a touchphone, and regular cell plans go for as little as 30$ a month. is this possible? If not, whats the cheapest way to have an Iphone in canada right now?