With exception to a few scattered reports/pictures that I keep hearing about, I don't think there's been much in the way of proof of many desert females laying good eggs, whether they're single gene or not. I'm certain that anyone trying to breed deserts knows about the rumor, and I am equally as certain that none of those people have had good results because they would have immediately tried to discount the rumor with proof. I know I sure would be blanketing the web with pictures, especially if I had females to sale.
I decided months ago to hold back all of my females (if I get any) until this rumor is confirmed/denied, or until I can prove them out myself. It is really surprising that all of these breeders are selling females at all, knowing full well that they could potentially be ripping someone off. Are they disclosing this to customers before they purchase? Look at how many of you had no idea about this. I just saw some dude trying to sell his 1kg female for 4k. I suppose he could be one of the ignorant few, but I wouldn't take that bet and I think it's pretty seedy.
Robyn is the only one that I've seen step up to the plate concerning his girls. (kind of)
You buy a Desert female from PE. If Desert females prove to be non breeders in the next two seasons, you can get your money back or credit towards something else.
That is a special deal, comes with a special price! $2500 for a female gets you the credit, $3000 for the female gets you a refund. We get the female back, naturally.