At what age, if ever, is a boarding school good for a child?
How can I clean yellow stains off my white kitchen counter tops?
What are some boarding schools like PCA in Zoey 101?
What is so good about blue pens?
What is the difference between white and brown eggs?
What is the process to repair a fascia board?
When was WHITE rice invented? I mean exactly that--not when BROWN rice was first cultivated, but white rice was invented.
materials why
Question by violetfade (51)
I am a teacher and go through a lot of these pens.
Answer by Sett (1838)
They are so expensive because the main ingredient in dry eraser pens is Ethanol which is an expensive chemical. Ethanol is less toxic than other ingredients used before.
Answer by martine (860)
The chemicals used to make these pens can be the culprit for the price. Try looking at your local dollar store, they tend to carry these.
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