Sigfox-ready chips can be bought from Atmel, Axsem, SiLabs, TI, .. and more : http://makers.sigfox.com/ http://makers.sigfox.com/ You should be able to get som

Sigfox-ready chips can be bought from Atmel, Axsem, SiLabs, TI, .. and more : http://makers.sigfox.com/ http://makers.sigfox.com/ You should be able to get some Sigfox-enabled TI CC1120 for a few $ easily.