enough for the plane ticket There is a max you are allowed to take out of the county\ And a passport is 30 dollars unless you do a rush, and even the rushed is less than 100 dollars. Max for Visa and Passport 250 dollars.
Now you do know that 99.99999 percent of all dating and friends in Ghana is a fraud, it is so bad the US Embassy takes several pages just to warn people and there are 1000's of web pages and even blogs about nothing but the fraud.
And for the airplane ticket, you can pay for it in the US and make it a prepaid ticket, no need to send any money, they just show passport at airport, but of course the fraud goes on, that they have to pay someone off, or they are detained at the airport for not having enough money to leave and so on. Often men send 1000's of dollars before they either run out of money or figure they are never comming.
US Diplomatic Mission to Ghana