We went and felt the same aswell.
Just seems a bit dis-organised, and not a lot there. The weather didn't help of course as it was appalling, but for instance, the 3 portaloos in our camping field got blown over, they were eventually put back up but no one thought to clean them so they were totally unusable as there was indescribable 'stuff' all over them!
The drifting etc was fun to watch but again, no racing, which on a race circuit I was kinda hoping to see!
Also, compared to other shows there were very few trade stalls.
Silent disco was ok. But a bit hit and miss.
Just felt like the adverts/website promised something but the show didn't really deliver we still had a great weekend away with friends but like you say £40 and 300 mile round trip felt like a lot when we could've just gone nearer home!