Any student who is a member of Amazon Prime Student can get $30 off the price of a refurbished PW3. Discount taken at checkout, making the effective price $69.99.
Certified Refurbished Kindle Paperwhite E-reader - Black, 6" High-Resolution Display (300 ppi) with Built-in Light, Wi-Fi - Includes Special Offers
Also, Amazon continues their promotion of a gift card plus $20 toward a new Kindle device when you trade in an old Kindle.