You can go here to find heavy strome (22 oz!) military style kilts in a bunch of sizes at a comparable cost:

http://www.whatpriceglory.com/scot.htm

Blackwatch, Grodon, MacKenzie, and Cameron are all available in fat boy sizes as well for around $300. It's about the same as noted above, only the sizes are availble.

I bought a Gordon, and I haven't been sorry. For an everyday kilt, it'll outlast me for sure. In fact, I am at school (teaching), and I am wearing it today!