Increased artefatcs' price by 2.5x, significantly decreased their weight and added high quality models.
-Increased the artefacts value by 2.5x in order to balance economy. Higher than this becomes unbalanced in my opinion since artefacts aren't that rare and usually spawns after emissions.
-Decreased their weight to make them less cumbersome and easier to carry around.
-Added high quality models and textures for artefacts from "Phobos: Artefact Reloaded mod" Moddb.com