Have to agree with this.
Its very easy to describe if what you are selling is a box.
In the heading. Bachmann XXXXXXX (Box Only)
Very simple & no comebacks from anyone who decides to buy,
Describe what you are selling to the best of your ability & as comprehensibly as you can.
If you make a mistake then fair enough. We all make them but make it clear in the heading exactly what's for sale.