Sad to see them go, there are so many things wrong with the way Americans are treated when buying and selling a car. Even though I work for a company in the same space it was great to have a company like them around to keep us on our toes.
To sell your car, there's KBB, carmax, cars.com and any dealer you want to buy a car from.
Beepi was just one of the many options (no hassle no haggle). However, instead of being a marketplace like cars.com, it took ownership of the transaction probably with hopes to take a bigger chunk of the transaction but effectively became a dealer. Car dealer margins are like 2%. At a 5x multiple, it would be worth 10% of Sales.