I'd never buy used electronics; especially if it needs to be registered like Alexa or Home. if this is not the case, items are new, and sellers have excellent ratings, and have sold a lot of stuff, then why not buy?
What's the prices you see? Like I said, I like buying from Newegg. l have bought a lot of new stuff from them for years. Most shipping is free and gets to me in 3-5 days. I have bought plenty from eBay, and Amazon, too. I do my part to keep the economy rolling along.
I am comfortable with my price paid today for the Home. The way I see it, I have made plenty lately (especially just in this week) in the stock market -- enough to buy a whole bunch of cartons of Google Homes, so why not celebrate the stock market rise a little! Basically, my new Home is free!