Eric, I am thinking exactly the same thing and have been for some time now. I think they are a marvellous idea. My brother bought one for his mother-in-law who has MS, as she can't hold heavy books and he highly recommends them. In preparation for mine, I have downloaded a programme called Calibre ... and this very clever programme converts the different formats of e -books available to match the type of reader. This you don't have to buy just Kindle titles, they can be much cheaper in other formats. I've done a lot of research
I have collected several free e-books .....and have them stored in my Calibre programme. I have been holding back from pressing the buy button, because I thought as they became more popular they would reduce in price ... but that hasn't worked up to now
However, I am almost pressing the button a "as we speak"
For me personally, I think one would-be extremely convenient for when I go on my sole lunchy outings ....I find some books a little cumbersome, but a Kindle would be ideal, as well as for holidays, etc... and would save the building of more shelves
Go for it Eric
This is a link to Calibre in case you are interested.
http://calibre-ebook.com/