Your company regularly uses material X and currently has in inventory 500 kg for which it paid $1,500 two weeks ago. If this were to be sold as raw material, it could be sold today for $2.00 per kg. You are aware that the material can be bought on the open market for $3.25 per kg, but it must be purchased in quantities of 1,000 kg.
What is the relevant cost of 600 kg needed to be used in a job for a customer?