Most clothing stores don't usually stock 2" belt because belt loops on most pants/jeas/trousers do not allow them. 1.75" is widest that you can get.

A Scottish store will definately have what you need. If you don't have one of those around, you can try stores that specialises in Alternative Clothing(Punk/Goth/S&M).

I got my plain black belt from a leather wear store in Vancouver for $40.

Now, tell us where did you order those 3 kilts and are tartan or solid colour?