I'll do you one better. My dumbphone costs me $100 US a year for voice and messages (I turn text messages off, though -- the phone's too small to type on with my fat thumbs), and any money I don't spend on calls gets rolled over to the next year. The phone doesn't use data, and I don't need it to. Email and Internet's what my laptop is for. Why would I want to spend $35 each month when what I've got now is more than I need? Oh, and that $35 is just the starting point. After you add state and federal fees, it's more like $50 a month.
It's $25/month (voice/text/data on 3G and WiFi), and the taxes and fees are about $3, depending on the state and locality. If you're replacing a landline, they have a $5/month plan that's WiFi only. The advantage of course is that you can take it with you anywhere you have WiFi, and from the phone you can switch to the $10, $25 or $40 plan instantly on a daily prorated basis. So that's about the same annual cost after taxes and fees, but you get a smartphone and all the functionality that comes with that.