Samsung Galaxy Tab 3 (10.1",16GB, WiFi + 3G, 5GB O2 Internet Flatrate) for ~12€ per month

• Get Samsung Galaxy Tab 3 (10.1",16GB, WiFi + 3G) for 1€ with 5GB O2 Internet Flatrate contract 
• Contract price: ~13€ per month, with 2 free months
• Duration: 24 months (Cancel the contract at least 3 months before the end of 24 month duration to avoid auto-extension)

Effective Contract Price :

• 2 months* 0€ + 22 months * ~13€ + 1€ (one time payment for the device) + 0€ connection fee = ~287€ 
• Effective Monthly Price: ~287€/24 months= 11.91€ per month
• Tablet without contract costs around ~300€. You save ~13€ + get 5 GB Internet flat-rate per month

Here is the deal (Scroll down to end of the page)
Read this general Info on mobile contracts in Germany