I'm sorry your breeder was dishonest, but I'm happy the bird and you found one another. Will the age make any difference in what could possibly be the outcomes for the bird's bonding well with you?
Our linnie was already a bit over eighteen months when she came into our home. (Our sellers were honest.) Nevertheless, she is one of the two sweetest, friendliest, and most loving birds of our four. The bourkes we started playing with regularly when he was still handfeeding is her equal in this respect.
I don't know if certain species of birds need intensive interaction before age 18 months for the best results or not, but I guess we never know what could have been if. I only seem to realize with my particular birds that it seems to be more a function of the birds innate personality than anything else, as long as they have not been mishandled.
Just curious about the age thing, though.
Again, I'm very happy for you and for your bird.