End this argument please...

#1
If someone knows the answer without a doubt please tell me.
There are 2 Golden Palaces bidding on eBay items. One is registered as
golden_palace_dot_com and the other as goldenpalace_dot_com

As long as I get paid for my auction, I don't care who is who, but the arguments have begun! Are they one in the same, are they 2 seperate people, what-what-what?