Pricing symbol could be a cord (3-4)

'pricing symbol' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Perhaps there's an association between them I don't understand?

'a cord' is the wordplay.
I cannot really see how this works, but
'a' is found in the answer.
an anagram of 'cord' is 'rcod' which is located in the answer.
The remaining letters 'be' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

'could be' is the link.

Can you help me to learn more?