Summer camp is like orthodontic care: it's a great idea in theory; it can change a child's life; and it is very, very expensive. So, if you are like me (read: poor ) I sympathize. As much as I'd love to send my kids away to the wild north woods of Ontario for several fun-filled weeks, it just isn't going to happen because my daughter's new braces cost the same as one hundred years at camp and our orthodontist wouldn't even entertain the idea of bartering what are essentially twist ties in your …