If they had that min trade in for any old phone, similar to what they had when I got my S9+ I'd go that way no questions about it. I read somewhere for the Note 9, Samsung had an offer in Sept where they brought that back and it qualified for early adopters as well. So my thinking is shifting from, do I get it now and risk losing the buds if there's no trade in promo. Or do I risk waiting for the trade in promo and it might not happen.
Or, because there's so many complaints about the no headphone jack (which imo yeah it's sort of a big deal, but i haven't used one in 3 months and it feels great) that the Note 10/ + wont sell as well and they will have crazy promos, SOL for early adopters.