The rudder is not from a Bf109K by the look of it. It's the earlier 'traditional' pattern. which may be from a 'G' before the 'tall' rudder was introduced, or an 'F', or possibly even an 'E', going off the chord section and triangular former at the top.
I don't want it so I wouldn't pay anything. My point is that stuff like this is worthless to the vast majority of the population but there might be someone out there willing to pay big bucks. It's a crapshoot.