I just picked this up last night. All I can say is WOW. Such a clear image, and HUGE. It is so much easier to use than the Radioshack scope. It is even top lit with a nice LED. I found this on the clearance shelf as I was picking up some other supplies. All the toys are 50% off. I suspect these will be readily available all around the country. There were 15+ on the shelf at the time. For this kind of money, what do you have to lose?