You can preorder this boxset for £21.95 from Zavvi.co.uk.
Sorry meant to say £21.95 on blu ray
they got a budget for a 2nd and 3rd film?!
The films get progressivley worse. In my opinion, buy the first film and rent the other two, just to save yourself some cash.
Buy a film, then sell to person A at 20% discount, then person A sell to person B at another 20% discount, then person B sell to person C at another 20% discount, until z