this would be useful for starter businesses as in some months it is necessary to raise more than just 10 invoices, especially as the limit of 10 includes credit notes. It is too large a jump from 10 invoices permissible per month to the next package up allowing an unlimited number of invoices to be raised. The price increase between the starter and middle package is disproportionate when just an additional 5-10 invoices per month is the only additional feature needed.