I would say that is a steal BUT Look at Date code to see how old they are as well, I was looking around for new/used tires to get rid of my stock goodyear eagle touring tires, they were wore and could no longer trust them, they had no grip. I just looked and those tires you mentioned and they cost 445 each, + install, + Taxes.. I found some pirelli plus 3,(Not the Factory Pirelli Verde) for $600 on FB +100 to install, Discount wanted like 1,200 +install, +Taxes. They still had 10/32nd thread so basically new and had Date Code of 2021..
I ended up buying from someone who had removed them because they wanted more aggressive looking tires.
Used tire shops are good, but most might have older tires but as long as they are not to old they should be fine.
I use to shop discount tire but right now these tire prices are just too high..
You can find good deals on FB or Craigslist..