Ten dramas about a retailer (9)
I believe the answer is:
tradesman
'a retailer' is the definition.
(I've seen this before)
'ten dramas about' is the wordplay.
'about' indicates an anagram.
'ten'+'dramas'='tendramas'
'tendramas' anagrammed gives 'TRADESMAN'.
(Other definitions for tradesman that I've seen before include "Shopkeeper; skilled mechanic" , "Buyer/seller of goods" , "Business operator" , "I must sell stuff" , "Ten dramas for skilled workman" .)