NSDiary

AT&T (US of A)

• Phone Price : $ 199
• Cheapest Voice Plan : $ 39 for 450 minutes (x24)
• Data Plan : $ 30 (unlimited data) (x24)
• SMS Included : 0
• SMS Plan : $ 5 for 200 (x24)

=> $1975 = € 1260

Data via gizmodo

Mobistar (Belgium)

• Phone Price : € 525
• Cheapest Subscription* : € 30 (for 180 minutes) x24
• Data Plan : Included in subscription (200 MB)
• SMS Included: It’s 180 minutes or 300 SMS-messages

=>€ 1245

(If you’re curious, the € 45 => € 1605, the € 60 => € 1965)

Data via mobistar

T-Mobile (Netherlands)

• Phone Price : € 79.95
• Cheapest Subscription : € 29.95 (for 150 minutes) x24
• Data Plan : Included in subscription (Unlimited Data)
• SMS Included: 150 SMS-messages
• Set up costs: € 26.25

=>€ 825

Data via T-Mobile

Mobile Viking

• Phone Price : € 525
• Subscription : € 15 (for 60 minutes) x24
• Data Plan : Fair Use (1GB data (at the moment EDGE))
• SMS Included: 1000 sms free

=>€ 885

Data via Mobile Viking

Conclusion

Mobistar is cheaper but you don’t get as much voice and not nearly as much data ( unlimited / 200 MB = unlimited).I’ll update this post as soon as I’ve got some data from the other providers T-Mobile added, it’s an amazingly good deal

update 1: questions or rebuttals @ twitter.com/junkiesxl

update 2: (via @iphonicbe) added Mobile Viking (which is a strong contender)