75k an T3-M4 (german PvE). What i also learned on the PTS: The new crafting material (exotic element) can't be earned by reverse engineering enhancements or modifications.
I think its a bug because i tested myself by extracting all mods from offhand example and didnt give any exotic elements. Same as with enhancements. But if RE whole offhand by having mod or armoring inside then it gave always exotic element, sometimes 2.
Just bugged and hope it gets reported.