Our cheapest plan starts at $11.61 for 1 GB over 1 day. That is the option for a quick stopover or a single busy day of maps and messages. If you want the same 1 GB to last a week, the 7 day version is $12.29, which is only a little more for six extra days of validity.
For most holidays the better value sits in the middle. You can get 3 GB for 15 days at $32.76, or 3 GB for 30 days at $34.80. The two prices are almost the same, so the 30 day plan is the easy pick if your trip runs longer than two weeks. Heavier users can step up to 5 GB for 30 days at $54.60, or 10 GB for 30 days at $99.65.
Look at the price per gigabyte before you buy. The 1 GB day pass costs the most per gig because you pay for speed and convenience, not volume. The 30 day plans give you far more data for each dollar.