Shoreham is really busy. A lot of UK GA moans and whinges all the time especially on the forums but enough people seem to disagree with the above mentioned views. If Shoreham dropped its prices it would just attract more of the five quid pilots who they don't need anyway because on the nice days these people fly, airports like Shoreham are really busy already.
skinny, barely maintained runway?
The nice hard runway went in late 1970s. Might be worth paying another visit
Or if you can't land on a 18m wide runway, do some training with an instructor.
Use it or lose it, but if you want a burger run destination for five quid then go to some grass strip.