This forum has loads of info. Been ages since I've been on it, and you now need a login to view it.
http://www.wlsinfo.org.uk/
My Mother in law went to Belgium to have a gastric band, costing her about �2,500, not including flights and subsequent aftercare including fills.
It's not a decision to be taken lightly, as most of the people she seems to know who have had it done have had some post-op problems of one form or another.
However, having said that she is now (3years later) half the weight she was, and is able to do so much that she couldn't do before.
Good Luck, hope you get the answers you are looking for!