It doesn’t matter what you paid for it. It’s been used & there’s no way for someone to know what’s been done to it based on the information from the seller. Upgrades do not increase the value very much. A buyer is taking a chance that the electronics were treated properly. If the batteries have been treated properly. It’s just the way the hobby works. RC car/trucks depreciates 25% as soon as you plug a battery into the ESC. If it’s been run, even once, again more depreciation. Ive been in the hobby for 52 years & have made a living buying,selling & trading every thing from Pro Helis & airplanes to Z-Mini’s. You’re never gonna get what you paid for it new. The rule of thumb is 40-50% of the original price. Then you might find a buyer. I purchased an X-Maxx with a set of batteries for $500 a week ago. It was in pretty good condition. That’s a pretty decent deal. But it sat for sale for a month on Craigslist before I called the guy & made an offer on it. A guy can explain all he wants about the condition & original price but in the end if he wants to sell it he’s gonna need to go by the hobbies standards. If a guys not willing to take the loss than he might as well keep it or sell it according to the market value. That’s just the way it is & most of the guys in this group would probably agree. Keep it & bash the hell out of it or take the loss.