Problem is, that I'm updated on 1.04 (also downloaded the 2 DLCs), but still an older equipment.pzeqp will be used - I see, for example on the Ju78D, Ju87G prices, values.
I searched the whole directory. Found an another equipment.pzeqp in the german localisation directory. That was the old one (!). I changed it also on the 1.04 equipment.pzeqp version, but the game still uses - at least in the campaign saves - the old one.

(I didn't install actually any jgsme-files)
Another issue is, if I open a custom campaign/scenario file with the Scenario editor, than not the equipment.pzeqp used by the custom campaign will be opened with them, but the main one. OK, I can than copy-overwrite the main one with the custom one, but I think, that would be not the clear way.