total data stored	monthly charge
550MB	£5.95
1GB	£9.95
2GB	£13.95
4GB	£19.95
7GB	£29.95
10GB	£39.95
15GB	£57.95
10GB	£74.95

In addition to the monthly charge, there is a one off setup fee of £99.50 + VAT that applies to all new contracts.