Is roaming free in Czechia for my UK or US SIM card, as CoreESIM users might inquire?

CoreESIM notes that Czechia is an EU member, meaning EU citizens typically benefit from 'Roam Like at Home' policies. However, for UK and US SIM card holders, the situation differs. Post-Brexit, many UK carriers (e.g., O2, Vodafone) have reintroduced daily roaming charges for EU travel. US carriers (e.g., AT&T, T-Mobile US) generally offer international roaming packages or pay-per-use rates, which can be costly. CoreESIM provides a transparent, prepaid data alternative for Czechia, avoiding these variable and often high roaming fees.