A man with a wicked wife gets a good deal (1,3)
I believe the answer is:
a lot
'a good deal' is the definition.
(I've seen this before)
'a man with a wicked wife' is the wordplay.
'man with a wicked wife' becomes 'lot' (reference to the biblical figure Lot).
'a'+'lot'='A LOT'
'gets' is the link.
(Other definitions for a lot that I've seen before include "Greatly" , "What little things mean?" , "Much" , "Significant amount" , "A good deal" .)