I bought an extra Deluxe Cabin for the music festival Defqon.1 - trying to sell it!
The cabin includes all the amenities of comfort camping, including the welcome BBQ, a special bar / chill area, and electricity. Link below to see it.
They sold out on the site, asking 600 Euro / 650 USD. The transfer is done through the Defqon site; I send them your info and they put the cabin in your name so it's 100% safe. I'll accept paypal for payment.