Assign value & calculate radio buttons

Hi Community - 

I am not familiar will code and need a simple Javascript code for a fillable pdf.    I want to assign a dollar value to 3 radio buttons ("Basic": $ 25.00, "Pemitted": $50.00, or "Combination": $50.00) and to a check box for an option ("Expedited": $25.00). The calculated value, depending on the selections, will calculate in a seperate total box.

Thanks in advance for your assistance.C