1. Mixtape sells are composed of wholesale to websites and stores and advertisements.
2. 99% of the time the DJ gets the profit.
3. The mixtape DJ's get the songs from the artist or from a record pool.
4. A good mixtape moves about 20,000 or 10,000 are good numbers.
5. The sells cover artwork and studio time.
6. You might wonder why you have to pay more for a mixtape on a website, its because of the site and profit of the site.
I would add more but I gotta go!