Yarn prices

Hello all,

Recently, my wife and I have noticed how much more expensive yarn has gotten. We used to go to the store, and pick up yarn for the month for less than $25. Now, we can barely get by by spending $25 for the week. We live in Tulsa Oklahoma, and we never thought we'd see such a drastic rise in prices for a simple commodity like yarn. Has anyone else noticed something like this?

Thanks