Just how rare is a rotated reverse?

Back when Statehood Quarters were being minted,
I had the good fortune of finding one that was
BU and obviously rotated. I had to go thru 6,000
normal coins before I found it.

I was really tickled over my discovery and promptly
checked Ebay, which gave it a street value of $117.
THEN came feelings of disappointment, because I
thought that the era of rotated reverses was over and
had personally valued the coin at a bazillion kabillion.

Anybody know how rotated reverses end up that way? Is
it simply by loading the Die wrong on the Press, then
striking a few coins and then examining the coins and
catching the error and then correcting the die configuration?

Is the era of making rotated reverses in no way over?

From http://www.coinworld.com/error-and-variety-coins/

'Rotated dies: Most U.S. coins have the obverse and reverse sides oriented
so each side is upright when rotated on a horizontal axis. The alignment
difference between the two is 180 degrees. However, if the dies are aligned
at anything other than 180 degrees, the dies are considered rotated. The
Mint considers coins rotated by 5 degrees or less within tolerance. Dies can
rotate from the optimal position for various reasons although the cause for
a specific coin may not be identifiable. Some specialists consider rotated
dies to be striking errors since the die's face is unchanged. Prices vary
from no premium to premiums of several hundred dollars."

"george pearl" wrote in message
...
Back when Statehood Quarters were being minted,
I had the good fortune of finding one that was
BU and obviously rotated. I had to go thru 6,000
normal coins before I found it.

I was really tickled over my discovery and promptly
checked Ebay, which gave it a street value of $117.
THEN came feelings of disappointment, because I
thought that the era of rotated reverses was over and
had personally valued the coin at a bazillion kabillion.

Anybody know how rotated reverses end up that way? Is
it simply by loading the Die wrong on the Press, then
striking a few coins and then examining the coins and
catching the error and then correcting the die configuration?

Is the era of making rotated reverses in no way over?