PSEG offers sale for some smart thermostats with an additional location specific instant $100 rebate. NJ qualifies for the rebate for sure, check through the link if you are a PSEG customer at somewhere else.
Google Nest Learning Thermostat $99 + shipping
SaleGoogle Nest Thermostat E $39 + shipping
SaleEmerson Sensi Classic Smart Thermostat $7 + shipping
They have ecobee and honeywell smart thermostats eligible for instant $100 rebate too however they are not on sale for additional savings.