According to the organizers, these principles help to form a conscious society. It is better to familiarize yourself with them in advance in order to avoid misunderstandings and not get a fine or even a lifetime ban on visiting. The principles are described in detail in the Burning Man Survival Guide. This guide is republished every year.
In Black Rock City, you can only buy ice and coffee with money. The rest is 100% off. If you need something, just ask. Shoe and bicycle repairs, food and drinks, lectures, discos — everything is free. Although in a bar, for example, they may ask you to sing a song or dance as a payment.
Also, any brands are prohibited on BM. All logos on items are pre-sealed.