I prefer plastic boxes to protect my comics from water. Will you ever make a corrugated plastic version?
We investigated making the DrawerBoxes out of corrugated plastic before introducing them into the marketplace. One of the key elements to make a DrawerBox function is its durability. We found that corrugated plastic lacks the rigidity of heavier weights of cardboard that were needed to make it stackable. While we were able to custom manufacture cardboard to meet our specs, we could not do so with corrugated plastic. This is why corrugated plastic never caught on in the shipping industry.
Additionally, contrary to many people's assumptions, corrugated plastic boxes are not waterproof. Water will still come in the seams if the storage area floods. Since plastic materials would triple the cost, it did not seem to be a practical solution. Should there be innovations in that industry we will revisit the issue.