You're on a website dedicated to ebook readers and asking them if you should buy an ebook reader? Would you go to an automotive website and ask, "Should I buy a car, or stick with my horse?"
Look into your local library system and see if they let you check out ebooks and what their selection is. If you find titles you want, you'll need a reader that reads the "epub" format, like Nook and Kobo and Sony.
If library check-out isn't an issue, the new Kindle seems to be a winner.
That's just IMHO, of course.
The high ebook prices are either, a) a final, desperate attempt by publishers to keep their terminally ill hardcover business afloat, or b) the new paradigm, demonstrating that people who prefer ereading will pay a premium price for e-content. Roll the bones and take your pick.