Bear in mind with trade in the seller will also be thinking what he can make on it as well. You need to consider the whole package, plus consider how easy / difficult it is to sell on yourself. Nowt wrong with Leica scopes, but they don’t seem to get the respect nor value they deserve in the market compared to Swarovski or S&B.
And I also think that Leica and their importers are prepared to shift scopes for a reasonable price, whereas in the UK Swarovski’s retail at a premium - compare US pricing to UK - eg z6i 1.7-10x42 is £1,870 in UK but $1,920 in US if bought direct from SwarovskiOptic website. The US price is £1,440 - almost worth getting a cheap flight across.