With the announcement of the new Kobo Touch and the Nook Touch, now is a good time to buy a non-touch eReader. Both of the companies have put older versions of their eReaders on sale.
The Nook Wi-Fi version is now $119 and the Nook 3G and Wi-Fi version is $164. The Kobo Wi-Fi is now $99 at Borders. You could also try eBay for a used on to get an even cheaper deal.
And if you are looking to spend even less, Aluratek’s new Libre eReader are now $50 at Buy.com.