How much does data cost for 4G LTE at Verizon?

I'm planning on getting the iPhone 5 with 4g LTE. Since Verizon no longer has Unlimited Data plans, how do I go about getting a lot of data because 2gb of data for me runs out in a week (yes I use the internet on my phone and don't have Wi-Fi at my house) and 50gb of data is a whopping $415 a month. No way am I paying that much. Is there a way to choose how much data I receive like 4gb or 6gb or 8gb or even 10gb? Keep in mind, I will have unlimited texting and calling as well. And how can I keep it cheap? I'm only 18 and starting college soon.

4GB would be around 50-55 dollars a month. 4G doesn't cost any extra.