Letting Agent's fee near March

Letting agents fees in March vary depending on the services and rent. 
The average rent per month in March is £1,151. So a tenant finders fee for 60% of rent is £691. 
In March a full managment fee for a property is between 10% and 20% of the monthly rental value, averaging between £69 and £138.
Renewal fees in March are charged for renewing a tenancy agreement between the landlord and the tenant, ranging between £35 to £104.