I have been with boost going on 3 years and would be at $35. Mo. Changed phones to a 4G and that cost $5. A mo. More.
So I have been at $35.00 + $5.00 = $40.00 mo. And have had no issues yet, but I have not reached the 2.5 gb threshold so a throdling yet.
Most carriers are offering good deals now.