Milk prices went up

We were at Sam's club over the last weekend to get some whole milk supply for my son. The last time we got the 1 gallon milk was $2.85, but this time I saw the price for whole milk to be $3.15 and price for 1% is $3.15. When my son started to drink whole milk it was around $2.50. Then it went up a little and down a little. Just like the gas prices here, up and down. I still remember I bought the 1% milk for under $2.00 a gallon. Wow, I didn't really realize it has gone up so much.

Edit: Just came across a receipt with the price for 1% milk on 4/2 for $2.40 only.