Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE WINE ( Price INTEGER, Appelation VARCHAR )
TABLE: CREATE TABLE APPELLATIONS ( Appelation VARCHAR, County VARCHAR )

### Question ###
Give me the average prices of wines that are produced by appelations in Sonoma County.

### Accurate SQL ###

SELECT AVG(T2.Price) FROM APPELLATIONS AS T1 JOIN WINE AS T2 ON T1.Appelation = T2.Appelation WHERE T1.County = "Sonoma"