Using bid groups, there is no need to do one auction at a time. Just enter many many auctions into your bid group (there is over 400 on eBay) and tell AS you want to win one. AS will bid on each auction till you win, and then cancel all remaining snipes automatically! Works great for things like this.
Try Ubid.com. They have a lot of reconditioned items - sometimes at a good price. Be wary about their shipping costs, and keep in mind that the price you bid will be the price you pay if you win - regardless of what the lower bids were.
I got my Ipaq there and have been quite happy with it.
I realize this post is quite old now, but if you haven't found one yet or someone else is interested I may have a NX70 for sale soon. It's a refurb'd replacement for one I had that broke, I've had the replacement for 1 week now. I'm in process moving to a linux based iPaq but should be through with it in a week or 2. I also have a 802.11b wlan card, "zip-linq" cable, 2x128Meg Lexar memory stick and a Sony 32Meg MS that will go with it.