I don't know what the breed is but, I am almost certain that they are not leghorns. They certainly do not look any leghorns that I have. Maybe mine don't look like leghorns though 2. No PETA or Cock fighting posts, period!
They are Oriental gamefowl.. Gamefowl are higher than most breeds in prices.. Then there's a lot of the production breeds are high as well in the show quality form.. Nothing to be alarmed about really. I don't know much about oriental gamefowl but they look more like young (Or miniature) Thais than Asils (Or Aseels, Whichever you prefer) But i could be wrong.