Are such goods marked with hot irons? (7)
I believe the answer is:
'marked with hot irons?' is the definition.
'branded' can be an answer for 'marked' ('brand' can be a synonym of 'mark'). I'm unsure of the 'with hot irons?' bit.
'are such goods' is the wordplay.
I cannot quite understand how this works, but
'are' could be 'ran' (running is a kind of being) and 'ran' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for branded that I've seen before include "Marked with a symbol indicating exclusive rights" , "(Of cattle) marked" , "Hallmarked" , "Censured" .)