If it's any comfort, those fees won't be charged immediately. Fees are charged monthly usually about a week after you receive a notice that they are due.
But on the other hand, if you sell any of your items. Paypal will Hold your customers' cleared payments for 21 days against your performance.
Once you have been notified of the cleared payment, print out your shipping label through PP. Not only will this come from your payment, not your pocket, but it may give you a discount of between 5% and18% off PO counter prices on some services.
There is no email. There is a phone number. Call during the day to get Utah, where most of the clerks speak English as a first language, although they may have difficulty with concepts like "Canada". Pee before you call, don't use a phone that charges you by the minute, and have a good book to entertain you while you are on hold.