How much you will charge for making a product comparing site?

[Coinbuddy]

Hi!
I want a website where people can compare products with each others they will compare there specifications and prices.
You can use wordpress as well!
How much it will cost?

[examplens]

is only product comparing?

this site need to be only product cataloque or web shop?
product compare, only between product on this site?
do you have web design for site?

[Coinbuddy]

is only product comparing?

this site need to be only product cataloque or web shop?
product compare, only between product on this site?
do you have web design for site?

only product compare.I don't need shop