Can someone explain why a hardware wallet is better than a cold storage paper wallet? If the hardware wallet fails, you would still need a paper backup of the keys, right?
Also, is there a quick and easy way to use an offline phone or tablet to scan a paper wallet barcode, create a signed transaction, and then scan the transaction barcode with an online phone or tablet? This seems like it would be safer than a hardware wallet and almost as convenient.
1) Hardware wallets keep the private keys to your bitcoin securely offline yet allow you to send and receive conveniently, something a paper wallet can not do.
2) Not at present
Ledger Nano S hardware wallets are sold out till August. I think you can still find a Trezor at an elevated price.
Digital Bitbox is available for $78 shipped two day from Switzerland. I use and like all three. The BitBox is bitcoin only and simpler to use than the others for someone new to hardware wallets.