Overstock.com has a refurbished model Nook Color available for $224.99. And as SlickDeals.com points out, you can get it even cheaper with a 20% off coupon code.
Here is more from GizmoCrunch: “According to SlickDeals, you can get the special price (includes shipping) with a discount code: ‘I found that Overstock.com is carrying the Certified Pre-Owned (aka refurb) Nook Colors for $224.99. Credit goes to sceptor for finding the 20% off coupon code 206777 and to MaineShoppah, who in this thread mentioned that it worked with camera lenses which made me try it with the Nook Color. So it comes down to 224.99 x .8 = 179.99 + 2.95 shipping = 182.94.'”
You can also get 5% back and free shipping if you are an O loyalty member. You can get an additional $20 off if you are willing to sign up for a credit card.
Let us know if this works for you.