Re: march scopes?
I don't think getting a 10:1 zoom ratio (25x/2.5x, for example)is the hard part, it's making the optics good enough that the image doesn't go to hell when it's that high. In a cheap astronomical telescope, you can very high magnifications but the image is just a useless blur.
I just e-mailed Jim Kelbly for a price on the 1-10x24mm scope.
March scopes are made one at a time and slowly, and they are among the oddest of odd birds. I'm guessing the 1-10x will be about the same price as the S&B Short Dot.