Wifi is not cheap ! , but take a look to murata controllers, there is 2 version, basically those that work with TI chips MSP430xx and another one serial for all kind of mcu, as shown here.
Wifi is not cheap ! , but take a look to murata controllers, there is 2 version, basically those that work with TI chips MSP430xx and another one serial for all kind of mcu, as shown here.