Professional business name inspired by the word "cash".
The word "cashiero" contains eight letters and three syllables. Three syllable names are used by established brands like McDonald's, Nescafé and Toshiba.
Cashiero.com is a dot com domain. Dot com domains are the most valuable top-level-domain in the world, famously used by websites like youtube.com. When most people think of a website, they think of a dot com.