I'm 28 in Florida. I have a very decent plan for $75 a month. I have to pay for office vists (tho I am reimbused $50 for each one, they're usually around $125 or so) but i have a very low deductible that will cover me for any major illness or accident, and even for services beyond my coverage I get the benefit of the lower negotiated insurance company rates.
You can see these plans for yourself by checking our Blue Cross or Humana in Florida, among others.