Hand fed means they've been fed by people from a young age - usually 2 weeks or so. It doesn't mean they are tame necessarily - although usually they are more tame than parent reared.
It's the time the breeder/handfeeder spends with the baby that determines how tame it will be.
A large-scale breeder, raising large numbers of babies, may not spend much time with each baby except for feeding it and then placing it back with its siblings. They might not handle the babies at all after they are weaned. Babies raised this way will usually be tame but shy at first, but within a few weeks of weaning (without handling) they won't seem any tamer than a parent raised bird, although they may be easier to retame.
But, there are also many small scale, caring breeders who will spend hours socializing and playing with babies and who keep waiting lists so babies can go to new homes soon after weaning (or who just keep handling babies and treating them as pets after weaning). Look for breeders who don't raise huge numbers of babies and who genuinely care about their babies, ask questions and visit the breeder if you can.
I started with the millet in the fingers then slowly withdrew the distance then had it in my palm until she would eat from that. Fimally she got in my hand to eat it...She learned she liked to come out & when she did she paced the door. I'd open it just enough so she had to get on the hand & I took her out. I held her just for a short while as generally she was much happier playing on the floor with a small fan. She'd chew & climb it. She would get on my finger if I picked her from the floor to put her back in the cage. Her wings grew enough so she could fly back into the cage when she pleased.
& was quite content...
