Sorry, we have no way for products from different E-junkie accounts to be added to a common cart together, nor any way to split checkout payments to be paid to different PayPal accounts for different products nor otherwise.
However, products from a single E-junkie account can be sold from as many different sites and pages as you wish, and if you use the non-JavaScript version of our cart button codes (which opens the cart in a separate window/tab instead of showing an overlay "inside" your page), then those different sites could even let buyers add items to a common cart.
