I'm in a bit of an unfortunate situation and I'm expecting to visit Ghana and arriving entering Ghana with a Visa on Arrival or Emergency Entry Visa as it is called by the Ghanaian government website.

The website isn't clear on exactly what I'll need to provide - my nervousness extends specifically to the amount of money that the Visa on Arrival will cost and if it must be in cash local currency, USD or would paying with a debit card be an option?