I am looking for sorting containers for when I organize peoples homes. I am still using my bicycle and trailer as transportation to clients' homes which means these containers have to be light and collapsible. They also need the be wide and low- not too small. I would like to have 4 containers: Keep, Route, Donate, Can't Decide- I can just use trash bag for toss items. My last concern is price- $10 each would be my limit.