Price for a e-commerce site?

Hi everyone. I'm totally lost on this.

Please put a price on this request:

One site in two languages with two subsites (two variants of the same design). Every subsite, a product line and an online shop. Payment via credit card.

Just a few products, with videos and PDFs for specifications. Variants of products (by color/size or whatever) included. Photo gallery for every product (the usual, you know). Resizable images.

I know I can do it. But I don't know a hell of the price.

Advice and comments welcome.