Yeah, the spreadsheet says 4-5 keys. But when I ask for that in trade servers, assuming I get a response at all. I'll have one person tell me it's worth a bill's hat, then another will tell me it's worth 1 key, and another say it's worth 2 refined and all will swear up and down the spreadsheet is wrong.
I'm well aware of the spreadsheet, BTW. So I'm not exactly sure why you even posted that.