Hi,
I just wanted to give a heads up that I found these bags in the clearance bins for $1.25 per bag at Target. I plan to use them for my OOT bags. I live in Dallas so I don't know if they are available nationwide but it's worth a check.
Hopefully I am attaching these pictures correctly. The first is the bag alone.
This one is with my cat for some size comparison.
They were available in blue/gree, pink/purple, and all black. Hope this helps.