The most common and most likely answer to this crossword clue is the 6 letter word JOBBER
I've seen this crossword clue in Financial Times
J
O
B
B
E
R
More clues leading to the result JOBBER
Buddy explains!
The straight part
We know that "dealer in exchange" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dealer in exchange = jobber.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does JOBBER mean?
JOBBER noun- One who works by the job (i.e. paid per individual piece of work) and recruits other people.
- A promoter or broker of stocks for investment.
- An intermediary who buys and sells merchandise.
- A type of intermediary in the apparel industry, as well as others, who buys excess merchandise from brand owners and manufacturers, and sells to retailers at prices that are 20-70% below wholesale.
- A market maker on the stock exchange.
- A performer whose primary role is to lose to established talent.
- A thing (often used in a vague way to refer to something the name of which one cannot recall).
- An actor temporarily employed for a specific role, often in a touring company.