Letting Agent's fee near DE3

Letting agents fees in DE3 vary depending on the services and rent. 
The average rent per month in DE3 is £977. So a tenant finders fee for 60% of rent is £586. 
In DE3 a full managment fee for a property is between 10% and 20% of the monthly rental value, averaging between £59 and £117.
Renewal fees in DE3 are charged for renewing a tenancy agreement between the landlord and the tenant, ranging between £29 to £88.