I need to upgrade my extension cords. The ones my dad left be are from the 50's and don't have the 3rd prong/ ground. As a young kid my dad showed me how to cut that 3rd prong off of the offending tool,how to put a penny under a fuse and how to wrap a fuse with foil. So. I want to upgrade my extension cords and use them as designed. Where is the best place to buy them? I looked at Harbor Freight and they are expensive there. Or am I just out of the loop?