My upright piano came with one detachable, screwable leg, but not the other, and I want to have the other. Can I make a replica of the leg at some store and whatever? is it priceY?
If it's just a tapered leg it may not be too bad. If it's a turning, then has crazy fluting and various carvings on it then it will get pricey. And it depends on how exact you want this to be, as in wood selection etc. As mentioned , sometimes the hobbiest is the way to go. One really into wood working and furniture building or table building.
I do some wood working myself, mostly clock case building. I work from rough cut hard woods and end up with a finished wall clock when it's done. The prettiest one I ever build I gave to my second oldest daughter as a birthday present. It was an English style wall clock made from cherry with a built up crowned top. Working the wood for the stacked and glued molding around the top took hours and hours to make. I would never even try to duplicate a leg from my 1890's grand piano because it has the latter legs I mentioned above ( plus I have no lathe)! Point is it's the time more than the materials and at that hard wood is not cheap..