I have done all ebooks for three semesters. Personally, it is a good fit for me, but I highly doubt it is one for everybody.
I hate lugging books around. If it's a big, thick textbook I can basically guarantee I will not read it. I also lose things like it is my job, and can't keep my papers/notes in order. outside of the hospital (where, miraculously, I seem to be able to keep things in order), I'm a hot mess.
So, for me, an iPad and e-books was very worth it. I like having all of my reading (articles, notes, huge textbooks) available at all times. Some books ARE crazy expensive for e-books, which sucks, but many are comparable. And the search features are awesome. I think I end up getting better grades than others because no matter where I am, I have all our textbooks and drug guides with me. It's easy to do good research and learn. Plus, easy to flip from my book to youtube to watch a procedure to google to check a term to my anatomy app to look up some weird muscle.
that being said, the platform for Elsevier SUCKS. oh boy, does it suck. it freezes, the highlighting feature barely works, and the print can be small. Still, on balance, better for me, but I know many would find that a deal breaker.
Def. a luxury, and an expense I had to make some tradeoffs for, but personally if I am going to indulge myself I'm going to buy things that make my crappy school life easier. I'd rather have a tool that make my accelerated program easier and less stressful than nice clothes or dinners right now.
I would see if you can look at someone else's e-books first. It is really a personal thing. I am one of the few in my program who use them-- people just prefer the big books, despite all having ipads.