Don't overlook this effect.
Even though the price is low, the effect is very good.
Show a glass full of sugar. It is real sugar. You can take some and sprinkle it in their hand. Show an empty cylinder. Place the cylinder over the glass. Say the magic words and presto, the glass of sugar has changed into a glass of candy. Or my favorite a roll of lifesavers.
This would be a good buy at twice the price.