Found this yellowed White House at a thrift store for $10

I found this 2020 White House Set fully completed and built at my local thrift store for $10. About 70%-80% is yellowed and to looks like this might have been displayed near a window for quite a while. I personally don't mind because I think $10 is a steal for an older set like this. It's also my first ever architecture set that I own in my nearly 2 decades of LEGO building. I dusted it off the best I could and use some wipes to get ride of some gunk. What do you guys think? Does yellowing...