Are bugaboo strollers worth the money, and is it sensible to get one on ebay?

My wife is due to have our baby in January, and so I am shopping for the gear! Now, I am not made of money, and so I want to be careful to get good value while not scrimping and then I can put anything spare in the college fund, or alternatively buy some beer! Bugaboo strollers seem like the best on the market, but they are really expensive, should I get a cheaper one, should I get one second hand or should I bite the bullet and get the best brand new?