What is Verizon's cheapest plan for an iPhone?

I want an iPhone so flipping bad it's not even funny. Unfortunately, I can't afford it because I have a car payment every month (luckily I don't have too much longer to go until it's paid off), insurance every six months or so, and I'm trying to save for the future. I currently work two jobs (one being twice a week and the other being an every-now-and-then one). I have Verizon and love it. Unfortunately, you can't get a prepaid VZ plan on an iPhone. I heard you could with Virgin, Cricket, and WalMart's Straight Talk, but I don't trust either of them (esp. The last one). I want to stay with VZ because their service has been the best to me, but you have to have an agreement when you get the iPhone under them. What is their cheapest monthly plan for the iPhone?

Ok go to virginmobileusa.com and you can get unlimited data and 300 minuts no contract iphone 5 or 4 or 4s. Only $35 a month. The cheapest with Verizon is $109 a month