Talk:Excalibur/@comment-73.221.45.148-20160703195509/@comment-26652077-20160704183150

Yeah, that happens with my Excalibur and spitfires too. Usually, when an ore with negative value goes in an Excalibur (and I know you don't have any negative value ore), the Excalibur processes the ore at $0. The cooldown ending  for ores processed before could cause the Excalibur to process at negatives near $0. The cooldown ending for an ore worth qd+ can also cause Excalibur to process at $0.

If you didn't have ore worth qd+, I don't know what the problem is, but the problem seems small.