Our integration with Zapier only goes one way (from us to them) and only does one thing -- namely transmit a notification to them with the full order details each time we process an order for you -- so you can use that to meet any post-purchase processing needs not already handled by our standard features or direct third-party integrations.
If you have a large number of products you need to add to your E-junkie account, we can provide a spreadsheet template file for you to populate and return to us for a bulk-import -- contact us for this file and further instructions.
If you just want a way to obtain current product/account settings from your E-junkie account -- e.g., to have custom scripting in your site dynamically generate sales pages with current item names, prices and purchase buttons -- you can use our Products API for that, which you will find under the Beta Features heading at the bottom of the left-hand sidebar menu in your E-junkie Dashboard.