Roaming charges for data are outrageous

All I will say is, don't even think about turning on data roaming in USA. The charges are outrageous:
26 Aug 10 22:24:20 idata.o2.co.uk USA 113 £0.663

27 Aug 10 00:28:22 idata.o2.co.uk USA 4408 £25.831 (8 minutes of using Google maps)

29 Aug 10 14:50:02 idata.o2.co.uk USA 76 £0.446

31 Aug 10 23:45:15 idata.o2.co.uk USA 1823 £7.105 (5 minutes of using the BA app to check in)


No idea what the other two are.

Roaming charges for data are outrageous