Hey Laura are you a booking agent or a promoter. Do you do concert?
No it is not appropriate.
Agencies do not post their clients fees, and do not send out price lists either. Artists often do not have set prices, prices will vary on the type of event, region, and other details. Its best to start with what "your budget is", and go from there. You can get an idea of a range of what an artist may go for based off of the types of venues that they perform in (look at capacity and ticket price for their events).
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