Soundproof panels are expensive because soundproofing companies get the best materials possible to achieve a certain goal. However, you can make sound panels yourself that will do the same thing, and you’ll find that you can make them for cheaper. However, your homemade sound panels may not look as attractive as ones that were professionally made. There are pros and cons to both. Personally, I’d choose the more expensive professionally made ones for their aesthetics. I make a lot of drum videos, so I want my space to look professional.