I had read on this forum (or that I could get a value of my trade-in from Vroom, Carvana, or Carmax and that Tesla would match the best offer. when I asked my sales advisor locally, he said that they only will match Carmax (not Vroom or Carvana). he also said that they will accept a Carmax bid from as far back as 60 days (despite that the Carmax bid says that it is good for 7 days).