^ yes, £32 for a stand alone Go Ape is "acceptable " but from the publication point of view them are visiting "Chessington World of Adventures". Although people expect extra costs at theme parks, thus is little too much.
On other note, on the Merlin jobs site today they are advertising for a "High Ropes Course" manager and several operators. This confirms Merlin will be running it in house. So, imo, £33 seems a bit pricey for something that is (probably) not run by Go Ape representatives.