If you want a flagship phone without the flagship tax, a top eBay seller is now selling this year's impressive LG G6 for only US$420.
https://www.notebookcheck.net/Deal-LG-G6-now-available-for-just-US-420.230308.0.html
That is not what the seller has them listed for. Here is a copy and paste of the current price:
Price:US $474.99
From $43 for 12 months *
Buy It Now
Add to cart
229 watching Add to watch list
Add to collection