iOutlet via eBay offers the refurbished Apple iPad 2 16GB WiFi Tablet Black, model no. MC769LL/A, for $124.99 with free shipping. That's tied with yesterday's refurb mention, since expired, as the best price we've seen for this iPad in any condition. (It's the best deal today for a refurb by $3.)
A 90-day warranty applies, although it's unclear who backs it.