I got my EE (9.7" e-ink, 10.1" Android) for $249, which to my mind is a good bargain. If you want an up-to-the-minute Android tablet you can do better. If you want a large ereader with pdf annotation abilities connected to an Android tablet I doubt you can beat it. I really like having the 2 screens. My husband says it weighs too much for what he would use it for (ereading only).
Do you already have an ereader or anything Android? If you do the eDGe will be easier to learn.
How much will it bother you that the latest OS is technically a beta version?
If you've been reading the forums you know there are a lot of people who really like their eDGes, and some who didn't. There are people who have had or are having problems large and small with these machines. Buying now you take more of a risk than when the company was running strong, but there are worse risks you can take with your money.
It depends on what you want it for and how high your expectations are as to whether you'll be happy if you buy.