Is this a comparison of brand new horn price with used prices? If so, you're missing one really important part: condition. That's especially the case when you're talking about a make/model that's been around for a long while, like the S80 Serie II (and with that, was that the non-Jubilee?).
Answered my own question. Un momento.
Sorry 'bout that.
What I then wanted to mention is that some of the models you list have been around for a very long time, like the S80 Serie II. It's a little unfair to compare the original price of an S80 II in 1986 to a brand new S80 II (which is the new Jubilee series, I think). Additionally, that's 26 years ago. You've got an awful lot of inflation to consider. Design improvements, too. As another example, the Yamaha 875EX and Yamaha 875 are "radically" different horns and Yamaha's tinkered with the neck designs quite a bit over the years.
I think that the comparisons for the newer horns are more interesting, but it does confirm something I already knew: you get the horn outta the showroom and it immediately depreciates. Just like cars.
FWIW, WWBW.com sells both new and used and gives you prices for both. As an example, a lacquer YAS-875EX is $3775 new and $3398 "gently used." That's around 10% of a drop. A brand new P. Mauriat System 76 in gold lacquer is $2279 (before rebate) and "gently used" is $2051, so they're being consistent with the %.
Here's a fun question for the group: what was your last brand-spankin' new horn and when did you buy it? While I bought a couple of YAS and YTS-23s over the years, I don't remember when. The last one I vividly remember was a YBS-52 around 1987. For $1800. That's about $3500 in today's money. I sold the horn around 1993 for $1500. That's $2300 in today's cash. WWBW sells the YBS-52 new for $4962.
