I don't know if eSIMs are more expensive or less than a local SIM, but they are much more convenient for me when I travel. I can have working internet as soon as I step off the plane, which is great for finding transportation and not having to deal with kiosks that won't speak any language I know and might be closed. I don't have to hand over my passport to get a SIM, and in China they get around the firewall. The cost of an eSIM vs the cost of travel is too small to notice but the convenience is always noticed.