Greatly increase receipts: that brings surprised reaction (6,4)

I believe the answer is:

double take

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'surprised reaction' is the definition.
'double take' can be an answer for 'reaction' (double take is a kind of reaction). I am not certain of the 'surprised' bit.

'greatly increase receipts' is the wordplay.
'greatly increase' becomes 'double' (I can't justify this - if you can you should believe this answer much more).
'receipts' becomes 'take' (I've seen this before).
'double'+'take'='DOUBLE TAKE'

'that brings' is the link.

Can you help me to learn more?

(Other definitions for double take that I've seen before include "Second reaction to the unexpected" , "Delayed action" .)

I've seen this clue in The Independent.

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