Ben is going to the USA with Jane tomorrow to see Rayburn and family.
The roaming charges on his phone deal are here, I just checked.
When he was skiing in Italy data cost 3.9p per MB. In the USA it is £3.
On my phone, Google Maps has cached 198MB of data offline containing maps of the area around my home. That just shy of £600 worth at Three's USA rate.
The original plan was to use the Sat Nav on his phone to get to their apartment from Orlando. I will have to put the kibosh on that or I will be bankrupted.
It would be cheaper to buy a brand new USA Garmin and bin it after a fortnight.