I saw some at Academy for cheaper than Wal-mart. Didn't buy it though. I should have. Anyway, if you need some, Academy Sports in P'Cola had a lot and if I remember right, it was 14 something per box of 20.
If you shop a lot at Walmart they have an App for Smartphones call Savings Catcher you can download for free. When ever you shop there you scan the receipt with the app and it checks for lower advertised prices in the area. If it finds one it matches the price by giving you an eCredit for that amount. I bought the 300 BO at Walmart and after I scanned the receipt was credited for the difference between their price and Academy's. Pretty easy way to save without having to know prices at other stores to price match.