Most of the Public plans are geared towards pick3 options; in most cases it actually costs more to exclude a feature (eg if you only want talk + data there is no reason to not select txt as well)
The one thing Public has not really bothered with are Tablets & Hotspots
Financially they are always a great sell (since most clients rarely use the data regularily) and creates an easy upgrade cycle to sell larger data add ons for the few who do use it
Most competitors have plans between $5 and $25 per month
Publics lowest cost option is $30 (reduced to $25 if prepay 90 days)