We sell boxes, tape, mattress covers, and quality locks.
Box sizes are:

Tape costs $x.xx per roll.

We have mattress covers for single, queen, and king size beds for $X.XX.
We have several kinds of locks. Regular locks are $x.xx and sturdy locks are $x.xx.

We also sell Insurance. You can insurance the contents of your unit for $xxxx.xx in damages for $xxx.xx per month.