Well, just pay for it (6,9)
I believe the answer is:
health insurance
'it' is the definition.
The definition suggests a singular noun which matches the answer.
'well just pay' is the wordplay.
I cannot really see how this works, but
'well' could be 'health' (I've seen this before) and 'health' is found in the answer.
The remaining letters 'insurance' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'for' acts as a link.
Can you help me to learn more?
(Another definition for health insurance that I've seen is " cover".)