I can't believe how expensive mat cutters have gotten! I'm sure that the Logan unit you mention is a great system. Logan seems to be one of the leaders now, althought I have never used one.
I bought an Altos unit way back in about 1976 for $45 (price sticker is still on the box) and the only thing that has changed a little is the shape of the cutter unit. My $45 unit now lists at $159 although you can get their "Web special" for $119. I still use mine for all my mat cutting and I think that if all you are doing is simple square mats, it works just fine.