Until you can tell the difference playing it, I wouldn't think the price difference is justified. As long as a beginner has something that is half way playable, then that is what is important. You just don't want a horn to hold someone back. As a person gets better, they begin to notice the sublties of the horn. My own son started on my old 1962 Olds Super trumpet -a pro horn. However, because it was lacquer worn, when he played the shiny "junk" of the other kids, he thought theirs was better.
Again, the price is justified -at least to me -only if the player can really note the difference. That usually happens only when students perform at the upper intermediate playing level. Also, while equipment may help one extend ones abilities -a real pro can pick up about anything and make it sing.