If you're looking to melt scrap gold, watch out for misleading listings which tell you simply that a 'furnace melts gold' and bear the aforementioned in mind. Ask questions and get positive answers or don't throw your money away. Make sure there is a return policy in which there is no loss to you.
Of the nine vendors selling similar machines that I have contacted with this information, two said they didn't know, two said they would change their listing accordingly (but have not), three declined to comment and one told me to stop stirring the s**t, presumably while they carry on ripping people off.
As an update, I have had a reply from a trustworthy U.S. seller who confirms that their furnaces, which reach 1120°c (2048°f) will only melt 24 carat gold, if it's in small pieces, not nickel and not palladium.