Anyone know if keysavvy.com is legit?

I’m selling a used EV and someone told me about keysavvy.com. They look legit and they are registered as a car dealer in Minnesota. The reason I’m asking is because they claim that since they are a dealer they can get the 30% EV tax credit for buyers of used EV’s, which is worth up to $4000 for qualified buyers. I would appreciate any feedback.
Shaun