I don't really use PayPal that much, but if you have some bucks sitting in the account I don't see why you shouldn't buy PPBTC instead of losing the purchase power of your money. This is for the situation you are too lazy to transfer the money out of your account and buy tangible BTC from a regular exchange and transfer them to your personal custody.

I am not aware of the tax rate on short-term capital gains in the United States. Is it 30-40%?