If you can find a copy, its free on the cover of the MagPi magazine.
It must be the first time ever you get a free computer with a computer magazine 
Pity if you subscribe to the eReader version of the mag!
Once I got a Sony CD to work under Linux there was a few years where I bought magazines to get the CD. I also bought a new Slackware collection at almost every fest, I hadn't gotten net yet then.
Would you take Paypal to get one and send it on with the mag or would that not make sense?
It can drive video and host USB for $5? I want a few of those!
The magazine sold out very quickly, copies being advertised on eBay for £50...
I can get a Pi 2 for less than that!