Not only that, but basic, programmable load bearing thermostats are relatively expensive compared to the typical control line alternatives. However, even with basic programmable thermostats (>=$75 a piece), I saw my electrical bill drop considerably vs. a 30 year old mechanical thermostat in an apartment I lived in the past 4 years.

We've moved since then and took the thermostats with us. I still have two if you want to buy some slightly used aube programmables (nothing with wifi, but better than nothing).