What's an iPad 1 (16GB / WIFI only) worth these days?

What's an iPad 1 (16GB / WIFI only) worth these days?

well... the apple store is listing your model, factory certified-refurb (w/new case, new batt, 1yr warr) for 299.

Guess I should have thought to look there, eh? Well, thank you for pointing me in the right direction.