[diirk]

We just sold/traded-in my wife's 18 GLA45.
I checked on a few buy-it-now offers through various major sites and also Carvana and Carmax. I also spoke to the dealer we were ordering the replacement through. Carvana was the highest by about $1k. Carmax was next and the dealer was willing to match their price as a credit towards our purchase. No taxable income on our end and minimal hassle. We may have left a little cash on the table, but more than made up for it on taxes and ease of transaction.