Vandersteen 2CE Signature II: Is it worth the price of $2700? Why are so many for sale?

Go listen to a pair. 

no
it competes technically with $5 k stuff for a lot of reasons
$ in the drivers not fancy veneer
way down the learning / improvement curce, economies of scale, frugal dutchman running the company...engineers engineer no part makes it way on the speaker if it does not earn its way aboard...
refined design, drivers and crossovers have all changed but not the basic design principles: time, phase accurate, minimum baffle, low resonance cabinet, hand tuning of speaker in anechoeic chamber
with hundreds of thousands sold of course there are speakers for sale used...duh
Factory / dealers just ran a $500 trade in on and C towards Treo or better, so yes older 2’s out on market for sure....
they are also perennial favorites on the Absolute Sound / Stereophile ratings....

company does not chase tail, most if not all the basic design principles in place 30 years because the underlying physics never changed....

go listen

i did

have 3 pair now....

dig the music..

no
it competes technically with $5 k stuff

Yep, if my budget goes to $5K you can be sure the 2Ce Sig II is on the short list. My pair might be one the OP is speaking of, tho'. I just moved to used Thiel CS2.4SE. Tom Thiel and Rob Gillum may soon have "hot rod" kits that will make these sing even better.

I have had the Vandersteen 2CE sig.. They are great, spacious, laid back, capable of bass you can actually feel.’s a very musical speaker, not for someone who likes details on the bright side. I sold mine just because I wanted something different, something more like studio monitor sound, and because they are quite large. I would buy them again. $2.7k, if that’s what they want today, they are still worth it - some of the drivers comve from overseas: Vifa and Seas are suppliers among others.