We're looking to take advantage of Shopify's new Subscriptions API to help allow our customers to try products for $1 before charging them the remaining amount of the product 30 days after, if they haven't returned it by then does the new Shopify subscriptions allow this or can this be achieved through an app??
So Basically, when someone buys anything, it charges only 1 buck and the remaining would be charged after 30 days if the person does not return the product
This would seem to fall under unsupported use of the subscriptions API and would not be accepted to the app store. I think you're describing a trial business model on top of the subscriptions API. While a trial business model provides value to merchants, it is not the purpose of this API.