The most profitable data plan is the 20 GB plan for $22.83, offering the best balance of cost and data. The 1 GB plan, priced at $3.95 for 7 days, has a 1 GB cost of $3.95, making it ideal for short trips. For longer stays, the 10 GB plan at $14.72 for 30 days is a good mid-range option. Examples include the 2 GB plan at $5.28 for 15 days and the 50 GB plan at $50.85 for heavy users.