Bcengi

Bcengi ditches the bundle model entirely and charges you per gigabyte used, at $1.54/GB in Turkey, with no forced purchases or wasted allowances. Your balance never expires, so you can load credit and use it over multiple trips across months or years without it vanishing. Founded in 2017, the service is built for travelers who use data unpredictably and hate overpaying for plans they won't finish.

If you know you'll use eSIMs sporadically or take short trips where you only need a gigabyte or two, the pay-as-you-go model often works out cheaper than fixed plans. There's no stress about picking the right tier, and you're never funding a pool of data you'll leave behind when your trip ends.