Why the price of Nikon 70-300mm is much greater than 55-300mm?

I just visited the lens shop and notice that the 70-300mm price is >>> 55-300mm. I didn't understand why!
I want to a 300mm loom lens. Please suggest me!

Did you ask the sales person?

Here are the two lenses and you can compare them head to head.

http://www.nikonusa.com/...index.page

As you can see, the 70-300 mm lens is much bigger because it has to cover a full FX sensor and it is of a design that focuses internally. The other lens is an entry level lens designed to be affordable for beginners.