That is odd. Finisher is usually a little less expensive.
We are raising red rangers which I believe is basically the same breed. They are 11weeks old today and have been eating 20% their whole lives. Some of the Roos are just starting to look a little too big (lumbering walk). So 20%...
We are afraid Herbie is a cockerel. That's why my daughter named him/her Herbie, because she want it to BEE a HER. We thought so early on but then all the other 12 week old males have started crowing and Herbie has been very quiet. Maybe this is normal for the Polish?