Try the Dick's Sporting Goods website. While I have yet to see Centre Points in my local store, you can order them direct plus s&h and they have the full selection. With regular gas at $3.25 a gallon, it beats driving from WalMart to WalMart.
I did buy a 4X16 yesterday at the local WM. Are heavy but not so bad. If it's like my 3x9x50 I will be pleased.
What type of rings come with these, Weaver style? Sure wish they were standard .22 tip offs.