After all, during the war stage, the rise in prices of various materials is quite rapid. This is not the usual incremental increase; the price increase of materials during the war stage could possibly double or even multiply, and the price gap here is also quite significant.
Of course, Carlo's willingness to sell materials to Austria-Hungary at pre-war cost price is not entirely due to the allied relationship with Austria-Hungary.
The main reason is that not many European powers are participating in the war; the two main powers, England and France, have not participated, and they certainly won't miss the opportunity to make a big profit from the war.
In this way, although prices in the war may rise, the extent of the increase should be limited. Spain maintaining the pre-war market price for selling materials, although it earns a little less, can gain the goodwill of Austria-Hungary and Germany, which is also quite important.
