Hi Angst,
I called them and they've given me a quote on a Silver (PRS-505SC) with a 1 week delivery time. Funny that it's not listed on their web page.
The only glitch is that I've just found out Dell won't refund my money on the original unit for 30 days. I was notified of this when I cancelled my re-order with them.
So, if my timing isn't exactly right I'll owe for 2 readers for a brief period of time and I hadn't planned on that.