It depends on how much you want to start with. It’s like buying a car. You can buy a used jalopy for N250,000 or a Rolls Royce for N200,000,000.00. You can use a small shop with your “I Pass My Neighbour) generator or use a massive shop with a 40KVA generator and 5 air conditioners.
But generally, we like to advice that you keep your cost down by making your set up as cheap as possible. When you master the art, you can then spend more.