£30 is expensive
My accountant charges £5 per payslip
so £5 a month or £5 a week per employee
I would go with monthly its much easier and cheaper, if they dont like that then they dont have to take the job do they...
Its actually really easy to do yourself, i used to do it using Brightpay, although ive probably forgotten how to do it now and for the sake of a fiver its not worth it.