The powersports market is white hot right now due to the pandemic, as many folks have re-deployed discretionary funds that may have been spent on travel in the past on other recreational items that can be enjoyed closer to home. Motorcycles, off-road machines, boats, RVs, campers, etc. have all experienced exploding sales over the past 15 months, and combined with supply-chain disruptions caused by the pandemic, it has resulted in extremely tight inventory and higher prices at dealers nationwide.
I just checked with my local dealer, Bloomsburg Powersports in PA, and they have EXACTLY ONE side-by-side in stock. It's a Kawasaki Teryx for $18,000. They normally carry two or three new UXV 450s each year, but obviously are sold out of what they had and who knows when they'll get any more units in. From what I can tell based on posts on this forum and elsewhere, dealers of all brands (Honda, Yamaha, Kawasaki, Kymco, etc.) don't necessarily have any better idea about when they are getting new machines than you do as a customer.
My advice, if you REALLY want a machine for the 2021 riding season, is this: conduct a nationwide search on ATV Trader and find the nearest in-stock units to you. Negotiate a price online or over the phone and load up your trailer and go get it, or pay to have the unit delivered to your home. That's about the only way to guarantee you will get your hands on machine this year, because I've seen lots and lots of posts from people who put deposits down on units "on order" from the manufacturers who have been waiting months and months with no real idea when they finally get what they've paid for.
Good luck, and let us know how you make out!