The plants on ebay are obviously 2 years approx from flask, that's why I am sure it is impossible for someone to sell thoses Rex x MM and Val x MM... And if they come from Taiwan, I know for sure that they do not sell any Rex x MM or Val x MM now. If they had such crosses, they would still sell it. At the best it is Rex x MM or Val x MM selfings or siblings, at the worst, it is the Taiwanese style, and the parents are put according to the seller's wishes...
Speaking of Rex x MM, I have a big doubt that even the source of that cross sometimes messed up a little bit with the parentage... First there were 2 types of plants sold under that parentage, obviously different leaves, and very different flower quality... second the source had many others roths crosses that disappeared instantly from their offer, like Rex x Mt Kinabalu :evil: to be replaced by Rex x MM only...
And Robert, your Green Valley x Fly Eagle has a small problem, when I ordered first from Taiwan GV x FE and Fly Eagle x Big Garden, they explicitely told me that the FE x BG has wide leaves, the GV x FE narrow leaves... but from my experience in blooming thoses, the plants you showed a picture of looks exactly like most of my FE x BG, the GV x FE were really ugly... But now, if you order FE x BG you flower a crap that looks like a Charles E x Borneo cross... Go figure...
About 75 per cent of the plants I got from Taiwan of roths from thoses crosses were contaminated in the rhizome or a couple of roots by Pythium by the way... Either they would slowly be stunted and die, or collapse after blooming, or sometimes get a faster basal rot.
Sam Tsui is buying and reselling a lot of crosses, so his reliability depends on hus suppliers. Once the Tokyo Orchid Nursery sold to him fake Val x MM, they turned out to be t Swithin, and I was one of the lucky owner. He did good on that, but I think it is possible to trust any supplier only if they have the parents themselves, really and honestly, or if the plants can be traced back to the real source... Sam has been cheated on some instances, even with the Rex x MM...