Why gold?

Try using wire coat hangers. They are essentially free, just wiggle them around a bit to clean the connections and your good to go. Don't be fooled into believing you need to spend your hard earned money on gold and silver. You can use them for your speaker connections too.

I spent a winter in Elko, Nevada. You could toss anything outside over night to cryo it, then toss it in your freezer for a slow warm up :-)