Just not worth it

[rebbonk]

Bill was walking through an alleyway, when a guy comes up to him and says 'I've got some Viagra here. I'll sell you a pill for £100'

'No way' exclaims Bill, 'Its just not worth it'

'£50?' says the dealer.

Bill replies 'Nope, totally not worth it'

'How can you say its not worth it, these pills are worth a fortune!' the dealer pleads'

'Oh I'm sure the pills are worth it' says Bill,

Spoiler:

'but my wife isn't!'