Hi - I'm also in Greece and I noticed a BeBook partner outside of Athens, the website is:
http://www.mybebook.gr/
Annotations are another issue (I've looked into it). There are the irex offerings, but they are quite expensive. I think that irex would be the best possibility for Greece, or a tablet netbook (which is what I decided to go with). The tablet is bulkier and nowhere near the battery capability - but is less expensive and has +++ features including annotation.
I also have the jetBook for carrying around, which is a good, basic LCD-based (not eink) reader and has a 1-year international warranty. It is crazy expensive to purchase in Europe though. Costs $170-$200 in the USA and 300 euros from the Europe site which would be $417 - more than double the price!
Good luck with your choice!