Yeah, my sister bought into the Kindle eco-system early on, but I picked a Sony PRS-505 instead (mostly because it would fit in a Travelsmith shirt pocket) and for a long while, the only ebook which I had "purchased" was Robert Heinlein's _Space Cadet_ which I got w/ a $10 credit for browsing their store on a certain day (which I then got a price-fixing rebate check for which I kind of wish I'd kept...) and it was so rife with errors I had to check out a copy from the library to determine what some of them were. When the Sony ebook store closed down, my "library" was transferred to Kobo's and their copy of that novel was made in a different fashion, or corrected, so was actually readable on the Sony PRS-600 I eventually upgraded to.

Since then, I bought a Kindle Paperwhite, and I've made a game of either getting free e-books when offered on the store, or purchasing books when on sale and I've had sufficient Amazon gift cards from Microsoft Rewards, so that I've not spent "real" money on any virtual books, except for when I've purchased an ebook to go along with a newly published hardcover by an author whose work I feel strongly enough that it merits such doubled purchasing.