The camping last year was a little notorious, not a lot of sleep, and officially you can't take your own food or drink (unless you know the right people). We wont mention the toilets. but portaloos after two days were "honking" to say the least.
See, I like lots of genres of music, which makes events like this worth it as I can run around (like I did last year) to various different tents to see various different DJs play. I wouldn't say it's worth over £100 for the weekend, nor worth it for monogenred people (if that is such a word).