In June of this year Brownells had the Rough Country sights in stock and available for $99. (I checked yesterday and they don't list them at this time).
About that same time people on another forum were commenting that they were receiving sights they had back ordered months and some over a year ago.
I had wanted a Target sight in a big way for a long time and decided to order one since they seemed to be shipping. I received mine ten days later in the first week of July. I ordered another with a modification and received that one about ten days later.
It may well be worth calling them to inquire. I have seen people posting last week that they had received sights in the mail that day.