Mostly the scale. Nauru is the third smallest country in the world, after Vatican City and Monaco, and about 12,000 people live there. Digicel is its only mobile operator, and our plan connects to Digicel on 4G.
It is also one of the least visited countries anywhere, with about 200 tourists a year by Wikivoyage's count. Our plans start at $2.99 for 1 GB over 7 days and go up to 20 GB for 30 days at $48.99.