If you site just launched, I think you can promote your site by viral effect and marketing strategies which are best ways to promote and then boost sales
I think this app might something you're looking for: Checkout Boost app
This app allows you to set free gifts, free shipping or discount (of your choice) to customers if they share their cart on Facebook, Twitter,... It will not only encourage them to finish their cart to catch your offer, but it will also help you reach more new customers on social networks, then boost sales for your shop.
- Free ship / Free gift / Discount can be set for many purposes:
- Add free gifts some specific products. For example: buy iPhone get a cover for free
- Add free ship or discount depending on the amount in cart (greater than or less than is both applicable)
- Mix condition. For example: cart which contains "T-shirt" product and has total amount greater than $200
If you want to hear more detailed feedback from experts about your website's UX, I suggest you go to this thread.
Hope it helps :)