Is new Product Type necessary for this?

[stsung]

Hello again,

I need to do one thing. for the products I have in my shop I need something via which the user can sell these products to me.

Few things that could be done came to my mind. only thing that came to my mind that should be working in the end is this...

- create a new product type that would list the products (this should work, but it also means TWICE the same data in my products table...in my case it should be thousands later...)

This probably will work if I change the template and description/translation (so there wouldn't be buy but sell etc....).

Isn't there a different way how to do this?

or any ideas what I could do?

EDIT: I actually created a new product type called product_vykup2 and an extra_field in the products table (products_vykup). but well, if I'll be using the new product type it will simply call products_price anyway.

I guess there is no simple way of loading products_vykup and not mess up with the db? (I'm not really sure where there is a code that counts the quantity in stock because this would be adding the quantity not decreasing it. I guess the most simple way is to have everything in db twice?? - I don't like the idea much)