The amount of money for fuel, perhaps, is worth looking at (6)

I believe the answer is:

eyeful

I'm a little stuck... Click here to teach me more about this clue!

'looking at' is the definition.
(eyeful is a kind of looking at)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for eyeful that I've seen before include "fascinating spectacle?" , "beauty!" , "Does a pupil contribute to this" , "someone beautiful" , "A (lovely) sight to behold" .)

I've seen this clue in the Evening Standard.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.