"buy and sell cars directly with other people." As such your experience can be good or bad with each deal.
Also, Blinker Direct has no inventory. That inventory is what other people put up on the app.
So let's read about Carvana.
"Carvana operates as an online-only used car dealer that allows customers to shop, finance, and sell or trade-in cars through their website. The company gives customers the option of having their purchased vehicles delivered to them or they can choose to pick them up at one of the company's 18 car vending machines."
Very different systems.
Anyone buy a used Audi or VW from Blinker Direct? What was your experience like? They seem to have nice inventory in my area, but they work on the same type of service as a Carvana or Vroom