Take the band Porcupine Tree for example. These guys record and mix all of their albums in the lead singer’s parents basement and they sell well over 250,000 copies on their own.
It’s Not How Luxurious Your Room Is
Listen to what singer and Porcupine Tree frontman Steven Wilson has to say in this article from Sound On Sound:
It’s not how luxurious your room is, how good your speakers are or the quality of the acoustic space. It’s how well you know what you’re hearing, because if you know what you’re hearing, you can make good-sounding records! - Steven Wilson, Porcupine Tree