Before you retain a U.S. immigration attorney to handle your EB-5 matters, it is essential to first consult with the immigration attorney to determine their EB-5 experience and expertise. To answer your question, we first must determine whether you want to invest your personal funds in your own direct EB-5 business or whether you want to invest your personal funds in an EB-5 Regional Center project. Once a determination is made as to which EB-5 process you would want to pursue then the immigration attorney can give you a proposal for set attorneys fees to represent you and achieve hopefully your EB-5 goals.
It sounds normal to me. Depending on the law firm and the particular situation, payment can be by cash, money order, or even online.