What are the cost for someone in Ghana to get a medical and a police check to leave the country?

Don't send any money. You are being scammed.

let me see, medial there is about 20 or 30 US dollars, since the value of dollar so high there. A police background about 1 or 2 US dollars.

but the issue is, you do not have to have those to get a visa to leave the country, those are just fees the scammers are asking for.

there is also no money needed in the bank to leave.

and the visa and passport both, are less than 330 US dollars.

welcome to the world of internet fraud.

You got a email or contacted on a dating site, a beautiful women after a week or two is madly in love with you

You are being scammed.. plain and simple... they find suckers who can't or won't find a real woman local to them and take all the money from them they can get away with.
Cut your losses... there are plenty of real women wherever you live in the world.

If you have to ask, you already know the answer.

Yes, you're being scammed.

Save your $$$$.

You are being scammed.