Need to sell our i3 - which car buying service to use?

We're going to sell our 2015 i3. I'd like to push the easy button and sell it to Carvana, Vroom or Carmax. Should I offer it to all 3? Any reason not to?

I will say that the offer on my 2015 i3 REx from CarMax was quite fair, especially considering how little work it took to get it. 
Eventually ended up selling to to someone who saw it here on GRM though!

In reply to dyintorace (Forum Supporter) :

I'd just try to get offers from all three. I don't see any reason not to as long as you can get all of them within the timeframe when the various offers are all still valid and not expired.

Thanks guys. I guess I'll fill out forms for all 3 at once and see what happens.

Karacticus said:

I will say that the offer on my 2015 i3 REx from CarMax was quite fair, especially considering how little work it took to get it. 
Eventually ended up selling to to someone who saw it here on GRM though!

Funny...ours is a 2015 i3 REX as well. It's a fantastic car, but extraneous in our fleet right now.

One of my best friends just sold his Focus ST3 to Carvana and got what I would consider to be a really high payout from them. That's my only experience with any, but I'd say its worth offering to all and taking whatever seems best.