It seems to me that,
compared to other US Mint offerings, the
Annual Uncirculated Dollar Coin Set 2016 (Item Number: 16RB) price of $49.95 is better than average for the Mint.
My reasoning is that the
American Eagle 2016 One Ounce Silver Uncirculated Coin (16EG) itself sells for $44.95, so for five dollars more you can also get four uncirculated dollar coins. Just the face value of the dollar coins makes the package 'worth' $48.95. (I put 'worth' in single quotes because one might argue that the American Eagle is overpriced.)
Of course, if you don't have any interest in 2016 uncirculated dollar coins, it would make more sense to buy the Silver Eagle by itself.
But if you kinda like the dollar coins, doesn't this seem like a better than average price for the Mint?
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On the other end of the spectrum, I find the price for
Kennedy halves to be outrageously overpriced: Two rolls (40 coins) for over 82¢ each; and even if you buy 200 coins, they are 70¢ each! For a 50¢ piece!

(And this does not even take into account the shipping cost.)
Contrast those prices with the
Native American dollars, which sell for $1.12 each if you buy
a bag of 100.
That's a markup of 12%, compared to 40% for
Kennedy half dollars.
~ Mark
P.S. I have read the US Mint web page,
How do you price your products?