How much does Valentine1 offer for trade in?

Due to being away for my work schedule rotation, I can’t get my serial number off of my old V1 unit to see what it is worth to upgrade. Does anybody know what they will give me for a value. It is in excellent working condition. I am planning a long road trip from Tacoma WA to Anchorage AK as soon as I get off on July 23rd. I might just purchase it so I have it all ready to go for the trip. Just wanting to weigh my options. Thanks.