Comment Re:I avoid conference WiFi's... (Score 1) 145
I start looking here: http://www.prepaidgsm.net/en/operators.html
It is a better resource for voice but you can find details on some data prepaid SIMs.
The last trip I took I was able to get a 3g data only SIM with 1gig data allowance good for a month for ~$20. This was Austria