Legit and worth the few bucks.
Ok, I bought this radio on Facebook marketplace and I'm not going to lie I totally could have called the dealership and asked them for the code because I had the VIN of the original vehicle and the serial number of the radio but after 20 minutes on hold and driving around for 30 minutes after they gave me the wrong number 3 times I wasn't calling them back and trying again. I figured for 15$ what the heck, might as well. If you have your reservations about this service, don't, it's legit, I recommend it over calling the dealership.