Is international roaming typically free in Argentina with my existing US, UK, or EU SIM card, or is eSIMFlyer a better option?

A common misconception among frequent flyers! Argentina is definitely not part of any domestic roaming zones for US, UK, or EU carriers. Your home provider (e.g., AT&T, Verizon, T-Mobile, or UK's Vodafone/O2) will almost certainly hit you with their highest 'Rest of World' international daily roaming fees, often $10-$15 per day. eSIMFlyer offers a far more economical and predictable alternative, giving you high-speed data without the shock of exorbitant roaming bills upon your return.