All I know is that Amazon Prime is totally f***ed up but very inconsistent about being that way.
I've only ordered a couple things from them.
A couple weeks ago, whatever I ordered was supposed to ship that day to receive it the next. It didn't ship out until the third day and took 2 days after that.
On the 16th I ordered the little plastic TJ automatic transmission cable connector "thingy" fully aware they were out of stock and wouldn't ship until the 26th. What was the dog barking about 20 minutes ago? Amazon Prime dropping that part off on my front porch at least 6 days early.