I think $5/each is a fair price...lots of tiny details=lots of hours of work! lol Have you considered putting them in bags, instead of wrapping one of each together in the cellophane/plastic? IMHO they would look better in a small bag...you could just fold over the top of the bag...punch two holes out parallel to each other and then thread a ribbon through the holes and tie a nice bow. If they're wrapped together, it seems that one would cover up the other...with the bags they could be more easily seen...therefore showing off your excellent work!!
As for the tiny hangers and flowers...try the crafts stores...Michaels, Hobby Lobby, etc. I would imagine you could find at least
the little flowers there...and if they don't have the little hangers...you might look online for a site that sells doll house making supplies. Some of them carry everything to build doll houses, as well as the furniture to put in the houses, the dolls themselves and any accessories you could possibly think of ...right down to clothes hangers. If not there, maybe some sort of doll making website. Just thinking 'out loud' and throwing out some ideas...lol. Good luck!