Recalled piece about old commercial deficit (5,3)
I believe the answer is:
trade gap
'deficit' is the definition.
(I've seen this before)
'recalled piece about old commercial' is the wordplay.
'recalled' is a reversal indicator (to recall can mean to bring something back).
'piece' becomes 'part' (synonyms).
'about' indicates putting letters inside.
'old commercial' becomes 'aged' (I can't justify this - if you can you should give a lot more credence to this answer).
'part' going around 'aged' is 'pagedart'.
'pagedart' backwards is 'TRADE GAP'.
Can you help me to learn more?
(Other definitions for trade gap that I've seen before include "evidence of unbalanced economy" , "'The difference between exports and imports (5,3)'" , "Imports/exports difference" , "Import-export concern" , "Economic deficit" .)