Just over a week after launching in the United States, the Motorola Moto E4 is available at discounted rates in the country. Specifically, Republic Wireless has the phone listed on its website for $99, which is $30 less than its launch price. Aside from the carrier, the handset is also being offered by Amazon and Ting, but both are selling it for $129, meaning there's no discount. Verizon, as you might already know, is also selling the phone for much less ($70 currently), but for that, you will need to pick one of carrier's prepaid plans. Source
Source: http://www.gsmarena.com/motorola_moto_e4_discounted_in_us_already-news-25952.php
