I feel like I keep pimping myself out for them by mentioning it all the time, but I ordered the
i-nique cover. I haven't gotten it yet - I shipped it to the States since I'm leaving here in two weeks and I didn't want to risk missing it. There's no plastic involved, and the shipping is the same everywhere outside of the UK.
Although I'm impressed you've broken the plastic twice, since I haven't had a problem, but I don't really tweak my cover at all when I read (I hold it like a normal book). I also keep mine in my trusty
homemade polycarbonate case when I stick it in my bag, since I'm paranoid like that, so you might want to try doing something like that.