Data plan question

[sadmedic]

I currently have Verizon's unlimited data plan which is ridiculously expensive. I noticed in the latest kitchen an app called No Data, which apparently shuts down all data connections. Could I drop down to the Pay as you go plan and use the No Data app to make sure that I dont get charged by any programs accessing data? Would I still be able to download pic/video messages? Do you get charged the data rate for pic/video messages?