1XTech® 250 KCMIL Cable Price – 250 MCM Wire. Pricing, Cost, Data Specs. Do you need a 250 MCM Price or 250 KCMIL Pricing? It's important to note that you're able to purchase your 250 MCM / 250 KCMIL copper and aluminum conductor cable from 1X Technologies, today. Furthermore, while 250 MCM can be a non-stock size, we may have the specific 250 MCM Cable type you need on the floor, .