If you like to collect Sigs, buy it. But its resale value will be low. Nobody wants a full-szied single stack 9mm holding only 8 rounds. A glock 17 carries 17 in a similar size.
But if you must buy it, call and find several magazines first. Parts will be hard to come by as well.
I too looked at a brand new one for $415 in Seattle but ruled it out because it is the same size as a P226 and used police trade-in P226s come with (2) hi cap mags. Simple decision.
Gun apprasiers don't value the gun for much since mags are hard to find and there are several more popular 9mms in the Sig offering.
Just my thought process . . .
------------------
The Seattle SharpShooter