You can buy with no fees for the rest of 2020, as a way of promoting their new product.
After, Paypal is a business, and will 100% be charging you fees.
Buying and Selling Cryptocurrencies
The transaction fees are based on how much cryptocurrency (“crypto”) you buy or sell. The exchange rate you’ll see before buying or selling crypto will also include a cryptocurrency conversion spread. There’s no fee for holding crypto in your account.
Purchase or sale amount Fee
1.00 – 24.99 USD 0.50 USD
25.00 – 100.00 USD 2.30% of purchase or sale amount
100.01 – 200.00 USD 2.00% of purchase or sale amount
200.01 – 1000.00 USD 1.80% of purchase or sale amount
1000.01 USD + 1.50% of purchase or sale amount
You will pay these fees both buying and selling.