If you want tartan kilts go to Stillwater and look into their Economy and standard models under $90 delivered. You'll get much better deal. USA Kilts at $110 delivered are a great kilt for casual wear.

For solids check out Amerikilts or if you're willing to go up a few dollars more Freedom kilts.

Sport kilts can serve a purpose but I'm finding that if you expect to wear it in public you won't be as happy with them as compared to a Stillwater.