Today's (12/17) Int'l Herald Tribune has an article on GPRS in Europe.

Of note are the highly variable GPRS rates in Europe, with such great deals as unlimited use for about $15 a month in Finland, or free use up to 100MB on Vodaphone Italia, versus the more common and unattractive charge per KB/MB in most other countries.

Unrelated note: the Siemens ME45/S45 phones have an easily accessible GPRS data volume (MB) counter, a very nice feature IMO. No triband or Bluetooth however