Hi,i made this form to calculate cost per page of a printer.I just want your opinions and any ideas for improvement 
i also have a problem.Why i need to press the button twice to apply the vat?pressing it once changes the value in the table but doesnt show in the form.i have to press it twice to show in the from.Thanks
i also have a problem.Why i need to press the button twice to apply the vat?pressing it once changes the value in the table but doesnt show in the form.i have to press it twice to show in the from.Thanks
