I see your disappointment, but I hope the seller said it more like that the plant you're getting is bred for red flowers as there is no guarunteed in the results.
Only if you are buying a division of a known plant, will there be guaruntee.
It seems like many of the seedlings are maturing and coming out in the market.
I bought one off eBay last fall when there were plenty.
At the show last week, pretty much any vendor selling Paphs had venustum in bud.
I got a new one because it had three new starts!
My old one is dying I think. A good replacement.
I love red form also and you might want to buy a few from SVO.
His venustum was bred for red colors. Of course, not everything from this cross will turn out red or as nice as parents used, but one could hit luck!
I'm thinking of getting a few from Fred hoping to get at least one red.
I have bought Paphs from him and all were healthy with no disease spots.