Pass, no way. Not even if it was free, definitely not when it costs money.
Isn't the real benefit to AMAZON, and not me? If the package isn't on my steps when I get home, I can file a claim that says it didn't show up and it'll be replaced. Sometimes the driver's fault, or maybe it was theft, but Amazon will usually replace. With this, I'm paying $250 so basically the box won't sit on my steps? And opening my house to someone I don't know while I'm not home. I'd rather risk my new item than any of the items I already own, plus risk of pets getting out, they don't shut the door right afterwards, plenty of other issues.
What's the upside for me, exactly? At best, I'd rather install a waterproof box by the door (like one of those plastic deck boxes or something, and let Amazon have the key to THAT. Keeps the risk to just the item being delivered, but provides better security than leaving on the steps.