If you've ever had hair extensions before ...?

Hello,

I've recently been regretting cutting my hair to quite a short length, and the only solution I can come up with is to get hair extensions.

Current example of length: http://i303.photobucket.com/albums/nn148/HeartlessVenom/111.jpg

With that length of hair, would I be able to achieve this particular style?
http://www.handbag.com/?module=images&func=display&fileId=68384

I'd really love to make a change, especially with my 18th birthday coming up. It'd be fantastic to have a new look I'm more than confident with.

But how much do you think this would cost overall? I want to go to a salon to get it done, of course. How much did yours cost? Will it at all be possible with my short hair?

By the way, I live in the UK.

Thank you.