The Korg B2 is another popular choice for beginners. Never tried one myself so I can't say much past that.
Generally, any quality digital piano such as the ones you've been looking at will last quite a few years, given that you care for it properly.
Edit: About maintenance, there's hardly much you'll have to do beyond just cleaning the pianoand making sure not too much dust accumulates (I recommend just covering the keybed with a large sheet) Issues with the internals should be taken back for potential warranty claims.
I highly recommend you save up more. In terms of pianos, starting off with a quality piano is quite an important factor. Aim for at least around the price of a Yamaha P45 for a first piano. More is better, though.