Do you remember Jeff Patzer, the OLPC Intern in Peru? Well he's now selling his XO-1.5 laptop on eBay:
Just though I'd let you all know that I just put up another OLPC XO 1.5 for sale that is identical to the versions you featured a couple of weeks ago. In case anybody missed out on their chance to buy one of the two the first time around, now they'll have a second chance. It's a week long listing.
To date, XO-1.5 laptops have sold for $320-420 USD, so if you want yours, get into the bidding move asap. You only have a 5 days to make your winning purchase.