How much does it cost to marry some one from another country and have them become american citizen and what is the easiest way of do this?

Hi.  Once you marry, you can sponsor them to come here.  You can also file a fiancé visa to bring them here and then marry.  The fiancé visa is quicker(9 months),  But costs more in the long run, because  then you file for her green card after the marriage.  If you marry 1st, it may take 10-12 months to get here, but when they get here, you do not have any immediate filings.   Let me know if you wou of like to discuss ini more detail.  I alSo offer free consultations.