https://www.macrotrends.net/stocks/charts/CVNA/carvana/net-i...
https://www.macrotrends.net/stocks/charts/CVNA/carvana/marke...
ie assume seller is willing to pay $50 a day to have car sold today (and not have to field calls etc). That means selling a car a month faster is worth $1500. Carvana can borrow the $25K car value at ~5% to pay $100 interest to hold the asset for a month playing the time arbitrage.
I'm finding one thing that seems to be happening generationally (or just in my experience) is that folks are far more willing to pay for convenience/now. That means they'd rather have the $25k and car sold today than have the $1500 in their pocket a month later (and field calls etc).