Great, except what if I ordered something for a specific date because, you know, I needed it for that specific date? An extra month of Prime isn't going to help me there.

Then enjoy the fact that literally no mailing provider actually guarantees delivery date.

At least Amazon is more than willing to work with you to figure out how they can make your experience more palatable.

Royal Mail offer a guaranteed next day delivery service [1]

UPS in the USA do [2]

[1] http://www.royalmail.com/personal/uk-delivery/special-delive...

[2] https://www.ups.com/content/us/en/shipping/time/service/next...

"The guarantee does not apply when late delivery results ... from events beyond our control ... or the exercise of any lien in accordance with our Terms and Conditions of Carriage."

If you can void your guarantee based on "forces outside your control" in something like shipping, where you're at the mercy of traffic, weather conditions, and human error, it's not really a guarantee.

The UK is a substantially easier country to ship in logistically than the US. I don't doubt that Royal Mail's guaranteed delivery works.

Much like a cable company giving you a month of HBO when you complain, I fail to see how giving me more of an unreliable service will fix the broken elements of that service.