Yes, the plugin can be integrated with your Google Merchant account and data feed. If you have any questions about how to accomplish this, please feel free to contact us.
No but we do have a partnership program. All you have to do is share us with your network. If they sign up, they Won’t pay a dime more, but you will get 20% reoccurring commissions. See the Partner Program link for more details.
All plans are month to month. For each product in your store you will be charged a single Product Pricing Update. A store with 1,000 products, updated once a day, would need 30,000 Product Pricing Updates.