Query to find "All bars that sell three different beers at the same price?"

My Tables are

Sells(bar,beer,price) - bar - foreign Key.. Bars(name,addr) - name primary key.

I thought of something like this but that dosent seem to work ...

 Select A.bar As bar , B.bar as bar  
 From Sells AS A, Sells AS B 
 Where A.bar = B.bar and A.beer <> B.beer  
 Group By(A.beer) 
 Having Count(Distinct A.beer) >= 2

Is this the correct SQL query ?