How much worth is a TF2/CS:GO key in refined metal?

each ref costs 0.15$, now do the math.

yeah, about 15-20; depends

http://backpack.tf/ use this usefull site to see tf2 items in ref. inculuding tf2 keys.

https://scrap.tf/keys

http://www.trade.tf/ Im going by the rate shown there on the main site

On a side note: my six year old is currently playing. It's hilarious