I asked the 2 kidlets in high school, to come up with back to school supply lists. I added "lunch box" to kid # 1's list. Aldi's has advertised them, I have yet to see them there. The prices are 1/2 what I have been paying at Xpect. I also tried Savers, no luck there, so far.
Then we checked the tall storage cabinet where I keep extra, including old from previous school years, school/office supplies. I was able to cross A LOT off of the list!
-Kid #1 :
2 1 inch binders
5 medium sized binders,
a vinyl 2 pocket folder