If I change subscriptions, will I receive a pro-rated refund for my current subscription?

I wanted to consult, if I change a bronze package, a silver. The difference in money as they do, since they page the entire year. thanks

If you change from Bronze to Silver you will receive or pro-rated charge or credit for the remainder of your current subscription.  The credit will be put towards your subscription and if there is any remainder, it would be put towards further subscription payments.