Panda, like every other farms, has fancy names for their aros. I mean, aros is still a business, can you really blame them for some marketing. You can't blame Toyota because they called their car Matrix, even though it has nothing special. At the end of the day, marketing is what sells.
So does Panda Gold Supreme really cost more? I believe the seller had a very reasonable price for this RTG, even cheaper than some stores around here sell it.
People thinking that RTGs shine and color can be compared to XBs are a bit confused. Of course, out of the bunch, some will look very nice. But still, the best RTG can never be compared to the best of the XBs. But to each his own, and some people are just not ready to spend that much on a fish, when other things in life are more important.
I personally have always love RTGs, not that I don't like XBs, but I believe RTGs are the best color versus price bet.