Plugin to allow member to upload file

I am not new to wordpress but I am wondering if there are plugins that will allow my member to upload there file. Because I am planning to create a website where I can sell my code and also allow my members to sell there code in zip format.

So the requirement should allow them to add title, description, price, image, and a video demo of their product.

 

If you add your users to wordpress as authors (not editors) they should be able to add their own posts along with media such as video files.
Will that do what you want?

 

Isn't it that anybody can easily download the file they upload if they just use the add media built with wordpress? I want to sell the file as what I have said.

 

You have two completely separate problems:
1. access for sellers to "requirement should allow them to add title, description, price, image, and a video demo of their product"
2. access for download by buyers?

I tried to suggest a solution to problem 1 - which seemed to be your question

Problem 2 for selling you could to link to a payment processor who provides a service for digital downloads after payment has been made.