I got a 512 LCD at launch prices. I have zero regrets. It is awesome when I go on travel but also great for just hanging out around the house. And while the price is considerably higher than a switch (less so if you go for the entry level pricing), you save a LOT on games since Nintendo Pricing tends to translate to third parties over there too. But you obviously know you.
Will probably "trade in" my current model some time next year for the 512 OLED. 1 TB is tempting, but I have a desktop too. So installing and uninstalling games are almost all network transfers that go really fast because I generally am also playing those games on my desktop. Or even just keeping them installed there because I have the extra storage.
As for trading in: Be INCREDIBLY wary of using ebay. Ebay has incredibly good buyer protections at the cost of almost zero seller protections. If someone receives it and then says "Didn't arrive, go fuck yourself" they get their money back and ebay/paypal will basically tell you to take it up with local police... who won't do shit because ACAB. So stick to local exchanges (and follow all best practices for that) or just keep an eye out for the inevitable amazon or best buy trade in programs. You'll get less, but also will have almost zero stress.
Not really true. Just cover your ass with paper.
Had a buyer try to get away with cd-laser not working but I explicitly wrote that in the description (and not in a tiny font). So at the end I won.