download google express sign up for the free three months and buy it from there
Groupon was 12, got the phone for 58.99 minus the 40
Only for first time buyers
and will probably depends on where you live and what stores participate around it.
Not every area is available for google express so check before you buy.
They also have a tmobile lumia 435 for 30 so you will basically get the phone for 12.