Fabric alternative for leather I'm planning to sew a costume based on a character who is wearing what appears to be a leather duster. I'm trying to pinpoint what fabric to use, as leather is expensive and I can't afford to buy enough at a time to make a full jacket. I'm considering other options such as upholstery vinyl, but it doesn't have the same weight and looks visibly thin when it drapes or folds (maybe backing it with interfacing would work....? I haven't worked extensively with interfacing.)

What alternatives to leather are there? I'm looking for options less than $15/yard, give or take, that closely mimic the texture and weight of real leather.
Waxed cotton has the weight and drape. Here's a wiki link https://en.m.wikipedia.org/wiki/Waxed_cotton

Another benefit to waxed cotton is its ability to "heal". Once punctured leather, pleather, and vinyl will keep that hole. Also waxed cotton would be great as your mockup so you can tailor and make adjustments.