A hand-raised chick costs more and arrives already trusting people. A wild-caught adult is cheaper, arrives terrified, and may never fully settle.
There is a welfare argument in there as well as a practical one, and it is worth having out loud rather than in the comments under a sale post.
For anyone who already has a frightened bird, the method that works is slower than people expect: weeks of sitting near the cage doing nothing at all, then hand-feeding through the bars, then eventually a hand inside. Never grabbing, never chasing it round the cage.
If you have tamed a wild-caught bird, how long did it take? And if you will not buy one on principle, say why.