As this is under CodeCanyon I am amusing there is a working demo somewhere? That would be priority number 1.
The design is not great and feels quite outdated. You need to work on typography, hierarchy, padding and spacing.
You need to have a lot more options, features, layouts etc. to be able to compete in these marketplaces and esp. to add premium value. As it is there are loads of free pricing tables online that anyone could download, so you need to make it very very clear as to why they should pay to buy yours.