Shoptree works on a simple pricing model, which is based on monthly subscription. Essentially you would have to pay a monthly recurring amount as per the three standard plans mentioned at http://www.shoptreeapp.com/pricing 


Before you subscribe, we suggest you use a full-fledged free-trail of the product for 14 days. To sign up for the free trial please visit  https://secure.shoptreeapp.com/signup