Most of my "prime" orders have been fine. I did last month order some spark plugs that were shown as prime, and in description the "prime vendor" also had the phrase "fast shipping" It took him over a week to ship, and denied the phrase and that it was listed as prime. The next day the prime was removed from the listing. Needless to say he got a very bad review.
Exactly why I started doing a PrntScr captures of my orders.
The above was a Prime item order that was changed after the order was placed.
Until recently have never seen that happen in literally hundreds of Prime orders.