I have bought one of these kilts - as you say 'for gardening' - or the like. They are made by a group that label as 'Scottish Highland Kilt', and inside it says 'designed in Scotland', but I suspect that they are made in the East somewhere. The pleats are done in some sort of pattern, but not technically correct to sett. A complete novice to kilting might not notice anything, but anyone else who has one could really tell the difference. As I say, I have mine for around the house & garden as it'll wash okay and I don't mind what happens to it at that price. If I was expecting an authentic kilt I would have probably been disappointed. They do appear quite frequently over here.
Phil