[Xen]

My sun Lily wasn't tame at all when I got her in Jan, now she's the cuddliest bird... rolls on her back for belly and wing tickles, snuggles in my t-shirts and would preen my hair, eyebrows and eyelashes for hours if I let her. So it deffo can be done.
Whatever bird you get will take time and patience to get it to that sort of level... most birds will be at least a little nervous or wary of a new home/family at first.

I've heard of blue crowns being good with children... looked into them? One of the easiest going birds I've met was a sengal and quakers can be sweet little characters too.

My CAG will bite a strangers finger in a heartbeat, but when my 5 year old cousin met Matilda for the first time he snuck his fingers in the bars. He just kept laughing because she was tickling his fingers with her tongue... I think some birds just know when it's important to be gentle.

With prices breeders are 9/10 times going to be cheaper. If the USA is anything like the UK then it's usually quite a drastic price difference too. Might mean shipping if there isn't a breeder locally.