Yeah, the adding a line thing isn't exactly as cheap as I thought. Right now, my plan is $82 a month for 450 minutes, unlimited messaging, and unlimited data. If I was to add a line, that would jump to $130 a month. (including the $10 fee) So that would work out to over $1,500 a year in extra costs for that dummy line. At that cost, it wouldn't make any sense to add the line instead of just spending the extra $300 on full price.