Breeder Rosella Parakeets

Hello, I have two breeder pairs of Rosella Parokeets. They are around 4 years old. One pair is proven with each other, but the second has both the male and the female proven with other mates, but not with each other. They do get along fine, and the male "displays" for the female. The male from this second pair is a red eastern rosella, and the other 3 birds are normal eastern rosellas, but both pairs produce some red chicks. I am selling them for $500 a pair, or $800 for both pairs. Will ship at the buyer's expense. Local pickup in Philadelphia, PA also available. Thanks for looking!