We have a bunk bed set that our boys have outgrown.  It comes with two mattresses that are singles.  We are pretty sure they are three years old as our kids have grown to the point that they needed bigger beds.  The set also breaks down into two single beds as they boys decided after around a year that they didn't want to share a room anymore.  Please call 913-522-79-SIX-SIX if interested.  I am in Sioux Falls and I do not have any pics.  It is the "put together" type with all of the screws but all of that is pretty much still assembled.  All that needs to be put back together is the head boards and the stair.