since you live in the heart of the RV industry, i'd say that $15500 for an '07 23B is way too much.
i got my '07 Roo 23SS NEW for $14,500. for what they're asking for, you could buy a new Roo for only a $1000 more at RVW, RVD or House of Camping.
as far as the Expy, that sounds too much for that, also.
so, no, i don't think either is a deal.
Dan-Retired California Firefighter/EMT
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity