Bruce - I got mine for 39.95. I should have it on my dock as soon as I fill the pond up.
Although I may run electricity to my dock now and buy and electrical unit and put this on the other side of the pond.
I will let you know how it works. This would be PERFECT for your perch pond.
PS That is exactly the unit I purchased.
Also - Bruce, I may not use mine at all and sell it to you if you are interested. I was kind of interested in tinkering with some of the solar/timer units, but we could do that at your place also.