A spinnaker version (such as the Squall Classic) costs at least $100 more. Cuben versions would be at least $200 more. I have seen posts by Henry Shires that he wants to keep his tents affordable.

The Squall Classic is a Henry Shires design but is manufactured by Gossamer Gear. It's more of a 1 1/2 person tent than a 2 person tent (just the right size for me and my dog, or a child, but I definitely wouldn't want to share with another adult) and, last time I looked, costs $325, not exactly cheap. It also tends to sag when wet, although I believe it's the guylines, not the fabric, that sag. Its main advantage for me is that it is lighter and is the size I need. With the Squall Classic, as with my silnylon tents, I just pull the guylines up tight when going to bed and have had no problems.