You can only really quote a movie like this.
I'd say £7.99 per viewing would be a fair estimate.
It may be a wacky comedy at it's core but every so often I was forced to marvel at some genius directing. A prime example of this is when plane turbulence was illustrated by some jiggling jelly before the camera pans out to reveal a set of relatively large breasts, also jiggling. The visual not only serves its purpose in presenting turbulence but also draws comparison in two seemingly separate entities by showing boths ability to, well, jiggle.