You can buy it from any of these places: http://www.rupert-grint.us/dldvd.php
You can download it from here: http://www.amazon.com/exec/obidos/ASIN/B000PAAJW4/boxofficemojo-20
You can also watch it on Youtube: http://www.youtube.com/watch?v=VAU5JwW5FIA
Just look up 2-8 once that clip is finished.
It's a fantastic movie and Rupert is wonderful in it so I hope you enjoy.
Well my boyfriend and I saw it and hated it. It was boring. But, if you must:
It's only $6 on Amazon.com
Netflix has it