UNIONBANK EON has the cheapest charges when linking and withdrawing from paypal account.
UNIONBANK EON= NO CHARGE for 2 withdrawals per month. 10php charge if you withdraw more than 2 times in a month.
PAYPAL= Paypal charges 50php every time you transfer 7K below and free if you transfer 7K above.
For BDO= BDO charges 200php for every withdrawal from Paypal excluding the paypal 50php charges.
I don't know for BPI.