concern about service bus cost

hello,

I create a standard tier service bus queue with sessions enabled

the way I send is from nodejs, something like this {body : themessage, brokerproperties : {SessionId : "my_session_d"}

to read the message, I created a service bus trigger azure function using nodejs. and it works when I added isSessionsEnabled : true.

What I am concerned about is the "brokered connection" cost. In my usage, will I get billed for "brokered connection" ?

any help is greatly appreciated