Is it completley sold out? I've looked all over the internet and can't find a copy other than for 500$+ and thats ridonkulous considering the retail was 125$.
Try going to your local book shop - they might have some copies. Can't always rely on the internet. I saw one not long ago in one of the bookshops here in Dubai. I got my copy nearly 2 years ago whilst on holiday in bangkok. Did'nt realise that I had made such a good investment! Just keep digging. Perhaps you'll come across someone who doesn't know the value. Good luck!