Paying for fine inlaid top furniture item (10)
I believe the answer is:
profitable
'paying' is the definition.
(similar in meaning)
'for fine inlaid top furniture item' is the wordplay.
'for' becomes 'pro' (as in being 'pro' something).
'top' indicates taking the first letters (in a down clue, the first letter is top).
'furniture item' becomes 'table' (table is a type of item of furniture).
The first letters of 'fine inlaid' is 'fi'.
'pro'+'fi'+'table'='PROFITABLE'
(Other definitions for profitable that I've seen before include "offering good returns" , "Cost-effective" , "Rewarding" , "Money-spinning" , "useful" .)