There’s a new $2 Off Purina One Cat Food Coupon available and states it’s for any size, any variety. (You’ll find it listed under Pet Care.)
Walmart sells their 3.5 lb bags for $5.78, making them $3.78 after coupon. Also, check to see if your Walmart has the trial size bags that sell for around $1.99, possibly getting you some for free.
Thanks, My Pet Savings!
You can always pick some up for a donation to your local animal shelter.