If truly constrained by money to say...under $60 by the budget and the wife's concern, you could opt to make a kilt. Check the DIY thread for the guide to making the X-Kilt, a contemporary box-pleated kilt. I wrote the instructions for guys who know a bit about kilts, but are more comfortable cutting up lumber than sitting in front of a sewing machine. Almost 90 X-kilts have been made by guys on this forum, as well as unknown numbers of people who've downloaded the instructions but never post here. If they can do it, you can do it.

Sport Kilt also offers their Boulder Kilt, but you're at $120 again. The bad new is that there isn't a "casual kilt" , non-tartan out there in the $40 range unless you make it yourself. There is the Stillwater Kilts budget model but you'll need hose, a wide belt and a sporran for that and you're talking $75 again.