Could I get an Iphone without a data plan? If not, what are the cheapest options?

So I have this scrappy phone right now… But my parents want to either give me an Iphone 3 or 4. But i'm pretty sure they don't want to buy a data plan… But if worst come to worst, what are some plans O could end up going with? I'm hoping I could go without one.

You can't get an iphone from a carrier without a data plan. Maybe an unlocked one off ebay, but it would cost a bundle.
On ATT, a minimal data plan is $20 a month. If you have a family plan, individual phones can have data plans, so it isn't like everyone would have to upgrade.