Yes, Snowtrekkers are expensive, but there are many alternatives at far lower prices. These tents are heavy.They are designed to be hauled in on a pulk or tobaggan, not carried in a pack. This is not UL backpacking. The closest thing to a lightweight version is probably a Titanium Goat pyramid and their roll-up stove (check their site out to see what I mean).

One of our members made a tent similar to a Snowtrekker using Silnylon and light canvas for the half where the stove was. It looks like a big Eureka, which he used as a model. If I can find his posts with pics, I will post the link.
update- I looked for Rick's pictures but couldn't find them. IIRC, his tent weighed only around 6 lbs. It was a really neat design.