You'll want to get two units if you can swing it so that you have will have a back up in case something happens to one. You have will need supplies like tape, glue, styling products, shampoo, conditioners, mirror, combs, brush, alcohol and adhesive remover. Optional things like satin pillow cases, squirt bottles and alternate glues if you want. If you order from TL, you will likely spend about 300 per unit plus shipping. Depending on the type of supplies you buy, those could range anywhere from 100 to 250. Then you need to have some cash for the cut in which will vary by salon. Expect 75 to 125. In total with two units, you are looking at 800 to 1000. Hope that helps.