I don't know prices you have seen, if you give me an example I can try to compare it with prices I saw in other country.
Generally speaking, Aitor knives are good stuff: I don't know the exact steel composition, but it is an Chromium-Vanadium -Molybdenum in some model and Carbon steel in some other (it is vey easy to find out, it is written on the blade).
It has not a very high Rockwell number, say 55-56, but it is very hard to break.
Jungle Kings have a quite weak point: the blade is fixed to the handle by a "spine" that passes the handle from side to side, near the guard.
A thougher knife is the Aitor El Montero, a knife a little heavier than Jungle King I, without the hollow handle. The shape of the blade recalls CS Vaqueros. A friend of mine has one of them and, using it when he goes hunting to chop branches or to pare game, is very satisfied.
Another interesting Spanish brand is Muela. A very big catalogue and perhaps a little better stuff than Aitor.