That's a fair question :)  As a non-profit, we've tried to be as open as possible about this, and you can view our current budget here.

You'll notice our main expense is electricity - like the European events we're providing power and internet to the tents, so bring your extension lead.  Internet will be wifi or wired, running over a high-speed microwave link with 1Gbps transit back to London (pictures).

Thanks to our sponsors, all attendees get a fully-programmable badge with wireless and infrared communication.  We're currently planning some large-scale games to be run on top of this throughout the event.  We're also providing hot showers (free) and a full-stocked bar with local ales (not free).

Most importantly, you get to meet up with people like you. We're hoping to have everything from blacksmithing to lock-picking, from ride-on tanks to a giant knitted playground.  There will be two tracks of talks and workshops throughout the event, and everyone's welcome to sign-up if you've got something to share, of any size.

We're hoping on enough attendees to just about break even, but any profit we make will be put into putting on a larger event in the future.

It's not entirely your own entertainment - we've got a list of speakers, but we're waiting until they're all confirmed before announcing. And we've found from past camps that you can find plenty to do a see by touring the villages (informal groups of people with common interests).

Unfortunately, running this sort of event comes with a certain amount of overhead. This is of course only our first year, but by comparison CCC Camp in Berlin was €175 per adult (although children under 12 go free), and HAR 2009 in the Netherlands was €155-185.

You can currently get a small discount if you're involved in a local hackspace - PM me for details.