Can we go for Spree with Amazon Integration of products in rails?

Looking into spree that have a lots features for the e-commerce application in rails, But I need some diffirent feature. So I am explaning here what the actual implementation I need...

Firstly, I am going with spree and will integrate Amazon to get the products from Amazon and will push the same products into spree and that can be possible I know. That we can interagte easily with spree application.

This above statement explains that I am only taking products from spree and pushing the same into spree, But I have doubt comes when If I will add the feature of marketplace into spree application(Spree have a marketplace extenstion already I know about that), Will it be possible to connect the spree application marketplace with Amazon marketplace.

My applications may have many sellers which will add there products at Amazon marketplace and that we need to add in our spree application.

I am confusing about that, Like How we will go for doing the same integration like seller to seller integration in spree application with Amazon ?

I have found one extenstion like WOMBAT, that says the integration of spree with Amazon services, But don't know deeply about that extenstion and some how I come to know like it's paid extenstion, I don't have any problem if it's paid but can any one explain me that scenario in details like how i can go forward for the same.

Thanks in advance for help...!!!!!!!!!!