Is using a CoreESIM more cost-effective than my AT&T, T-Mobile, or Verizon roaming plan?

In most scenarios, a CoreESIM offers significant cost savings compared to international roaming plans from US carriers like AT&T, T-Mobile, or Verizon. These carrier roaming options, such as 'Day Passes' or 'Roam North' features, often cost $10-$15 per day, quickly accumulating to over $100 for a week-long trip. A CoreESIM is a prepaid, one-time purchase that typically provides a substantial data allowance for a fraction of that daily roaming cost, delivering predictable expenses and superior value for data usage in Canada.