Since I'm off to Greece for a week soon and it will be essential for me to have Internet access while I'm there, I decided to check around and try to find a good mobile broadband roaming deal.
Surprisingly the best deal I've managed to find so far is from T-Mobile UK. Full details can be found at
http://www.t-mobile.co.uk/shop/mobile-broadband/euro-broadband-booster/.
To summarise it's £1 for 3MB, £5 for 20MB, £10 for 50MB and £40 for 200MB bringing the price down to 20p per MB.
It's convenient because obviously a UK SIM and top-up's are easy to obtain. I wonder though, if there are any other European SIM cards with decent data roaming deals (which are suitable for mobile broadband and not just phone use only)?