Unless you are going for the ultimate and most expensive smart home setup, you don't need to spend all your monthly income on buying lots of components, sensors, smart bulbs, security cameras, etc., since for most users, it would be overkill anyway.
Each real estate agent who is looking to make it big in the industry and have serious goals in their carriers want to get to the top of the real estate market. Along their paths, there are hurdles and challenges that need to be overcome, but most agents have a mentor in their agency who can guide them along the way.