I hear that and honestly that was my first reaction as well. But after I reflected on it I decided that it's only supposition on my part to assume they are trying to screw me and low ball me on the trade - it's just as possible that with the Model 3 updates recently introduced resulted in a surge in buyers and trade ins and that's just the fair trade in market value one month later. If I didn't like it I was free to sell it myself on the open market (something I despise and am willing to take a monetary hit to not have to do).
Bottom line, had the new offer been the original offer I likely would've taken it at that time so, like I said, I sucked it up and paid the difference. I can certainly understand how that might not sit well with others and I considered just cancelling and keeping my Model 3. As far as loyalty, this will be my 5th Tesla purchased new since 2013 and I don't think Tesla even knows I'm a previous owner much less cares. I can't go back to ICE vehicles now and Tesla is the only viable option for me at this time.
Mike