Ever buy a plant for reasons other than the plant?
A couple of weeks back, I bought some broms on clearance. I honestly didn't want the broms and have no real desire to keep them. Why did I buy them you ask? Because I wanted the ceramic pots they were in. Each plant with pot was $1.50. The pots alone typically would go for much more than that.
Then just this past week, I bought a Mandevilla. Again, I really didn't want the plant -- I have no room for such a spacehog and (probable) mealybug/spidermite magnet in my apt once winter comes. So why did I bother? I wanted the metal trellis. Got the whole thing for about $8. The only time I've seen similar trellises by themselves, they've cost about twice that.
Some folks look at me strangely when I mention doing such things..............