Before ditching out the money and pay for an adaptor to power my laptop during my 12 hrs flight to hong kong, I was wondering if the majority of the seats (in economy class that is) has a power input for my laptop. I will be flying cathay pacific and I assume it will be a 747-500 or newer or a 777. I hate to spend close to $100 and find out that it won't work. Can any frequent travel shed some light on this? If you know any good sites for cheap power adapters besides ebay, pls let me know. I have a Dell 700M. Thanks!