You never need funds in your Paypal account balance as a buyer. When you purchase an item then Paypal credit the seller for you, this is so there is no delay in the despatch of your item. Paypal will then take the wait for the funds to transfer to reimburse them.
But if you want to add funds and pay from your balance then click on 'transfer' below your balance and then 'add' funds.
Advice is voluntary. Kudos / Solution appreciated.
