A great deal of amusement at the auction? (4,2,3)

I believe the answer is:

lots of fun

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

'the auction?' is the definition.
I know nothing about this answer so I can't judge whether this works.

'a great deal of amusement' is the wordplay.
'a great deal' becomes 'lots' (I've seen this in another clue).
'amusement' becomes 'fun' (I've seen this before).
'lots'+'of'+'fun'='LOTS OF FUN'

'at' is the link.

Can you help me to learn more?

I've seen this clue in The Daily Express.

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