I purchase them for 50 cents, pot them up, and frequently offer them the next year for $4.97. With small plants, this will be much simpler but bigger plants will be more of a difficulty. Your bonsai should be wet but not soaking damp. https://het-aardbeienterras-panne41739.mdkblog.com/34174509/how-to-earn-money-in-the-house-growing-small-landscape-plants-on-1-20-acre-or-less