Manufacturer refurbished Wi-Fi + 3G Nooks are $99.99 at Woot, with $5 standard shipping for up to 3 units.
Woot deals are good for one day only from midnight Central time to midnight Central time, or until their supply runs out. For popular items, they often run out early.
I don't use a Nook, and don't follow all of the specific Nook models, but this seems to be a pretty good deal.
The link is here: