Those are good prices... another thing you may do is go to some local Blackpowder or Reenactor shows, I was shocked at the number of local dealers that were selling their balls in the 5 - 7 dollar per hundred. Now no fancy box, they were in baggies.. But I went out and shot some and they were of good quality.. SO you can even save on shipping
At the local gun shops they are wanting 11 to 15 dollars per hundred boxes of Hornady..