Adding 9 extras to my order


Hi - I asked for a fiverr voice over - I originally paid $5 (I figured it would cost more but I did not know how much until after I reached the fiverr voice over person . I would like to add 9 extras to my order at $5 per extra. It appears that it does only 1 extra at a time? Do I need to run the extra 9 times on my credit card or can I do it once for $45?