How to ship an iphone and how much would it cost?

How should I ship my iphone 4? Can I put it in its original box or will they provide one? I'm shipping it from Toronto to Vancouver, how much do you think it would cost for a regular parcel?

Added (1). I'm sending it to a family member.

If you are shipping it to apple to fix or replace it, you can check off an option when you are asking to get it returned. On the website check the box that will say something like "Send me a box to ship it in" Or something along those lines. In about 3 days they will send you a box and materials to safely ship it back to them. If you are selling it on ebay just pack it tight and carefully. It will cost under $15 probably more along the lines of 7 or 8. You will need to tell the post office how much the package it worth, you will say $800 and they will be VERY careful.