Making good sound mixes is a talent, and it takes some time (and a natural ear for the sounds) to learn how to do it successfully. But these days, there are plenty of tools that make it just a bit easier.
Years ago a home studio was out of many peoples reach, but with the advances in technology and cheaper price points, a home studio is a lot more affordable.
Musical instruments from pianos to saxophones are expensive due to the love and labour put into making them, nevermind the parts themselves. Whilst we’d all love to be able to just walk into a music shop and buy a new Steinway or Les Paul whenever we want to, you can save yourself a bundle by buying second hand.