I have a PayPal account set up for eBay use. You need to deposit money from your checking account into your PayPal account to have "instant" payments made out of your PayPal account. Otherwise, your payment is made as an "eCheck", whereby you send money to PayPal only for a specific purchase - this eCheck takes several days to clear, and therefore is not considered an "instant" payment.

Yer welkum.