If your near me bring 'em in, if not get a good local Indie with SDS, but buy 'em for buttons, then spend a few $$ and sell for top dollar
That's how I got into Selling again up here, you gotta be brutal, but can make a good buck for a little effort
Oh, BTW, 2017 and above E Class, (and C & S), in a couple of years these will be going for pennies, because when all the Audio / Telematics / Cloud systems go wrong they will be un fixable to the majority
When fixed good return
I can't wait