I recently did this on my PayPal account.
Basically if you phone them up and add 'Micropayments' to your account you will pay less in fees. It has proven very useful for me and I have only had it on a month or so.
Please note you do need a PayPal business account for this (which you should have anyhow if it is for your business). You just need to give them a call and ask them to put it on - usually takes around 48 hours for it to kick in. On the website it says it only really helps if you are taking payments for £5 and under but when I phoned them they said it was £9 and under.
More info here >>> https://www.paypal.com/uk/webapps/mpp/micropayments
Hope this helps some of you