Still doubtful it is going to happen. Hopefully somebody out there is nice to me if it does though
A while back Dell had a pricing mistake on some of their LCD monitors. The 21" model was going for half price and I think the 19" model also had substantial cuts in the price. They emailed everybody to say that it was a mistake and they wouldn't be honouring the price. As compensation they offered everybody a £100 discount from what I remember.
A 20GB Karma costs $360 on Amazon. As they're going for $70 on Dell, they're making roughly $290 loss on each one. So for a conservative estimate of around 5000 players ordered (It's not that unlikely, some people on the Anandtech forums seem to have ordered 30+ each) then that's $1.45 MILLION in losses... Even Dell doesn't have pockets that deep.
What's likely to happen is that Dell will offer the Karma at the correct price but give people a discount voucher worth $50 or so.