The Harbor Freight saw is adequate for most as long as you pay careful attention to getting the arrows cut square.
I've used one for a couple of years with good results. Extra blades are available from a guy on ebay. He has his own little business selling these saws and the blades for them. He has a jig that looks pretty good, but I haven't tried it. When I bought blades last year, his service was very good.
Cabela's has a couple of new arrow saws in their new catalog. They are about $50 cheaper than comparable Apple saws. They also have little rollers on the backfor spinning your arrows. I think that I have one coming for Father's Day.

I'll post my impressions when I've tried it out.