I'm fairly sure my friend bought that, and if I remember correctly, it was also quite expensive. Yes, the product works great, but you can also get the job done with something that costs much less.
Personally, I was looking for a cleaning solution to use on the screen. I just popped by my local optometrist and picked up a $5 bottle of generic cleaning solution that is safe on plastic, glass, and acrylic - it works like a charm! That said, I'm sure warm soapy water would work as well.