Around 16 - 18K, had the 18 & 19 MSRPs written down but can't find the paper now. Below is a list I was give of the changes to the 2019 models.
2019Berkshire XLT
Optional Euro Loft Front Cockpit Bed lift
Sirius/XM Antennae installed (Tuner Req.)
Dual USB Charger Passenger Console
Hydronic Heat/Hot Water System
Bose Sound bar
New Multiplex Features
Flush Floor Step Cover
Electronic Pantry Locks
2 Additional, Dash Stereo Speakers
Add Toe Kick Lighting
Revised 43B Floorpan
Add Heat Pump to Rear A/C
Full Tile Standard
Power Cord Reel Standard
Chrome Side-View Mirrors
Semi Gloss Hardwood Cabinetry
Ceiling/CrownFront Living Area
Updated Furniture Designs
Taller Kitchen Backsplashes
w/More Glass Mosaic Insert
New wallboard
New Bronze Maple Wood Color Avail.
New Countertop Colors
Solid Surface Dιcor Shower walls