Sure, you can use our logo for that purpose. However, if you're selling from your own Web site, buyers generally wouldn't be aware they're placing their order through E-junkie. Just copy the Cart button codes we provide in Seller Admin and paste those into your Web site, wherever you want the button to appear. Make sure you include at least one complete block of View Cart code (it's the same for all your products) on every page where you have any number of Add to Cart buttons for specific items, which allows the cart to appear as an overlay "inside" your own page.