Costco online has Yamaha TSR-700 receivers for $399.99. TSR-700 appears to be a Costco rebrand of the new RX-V6A which just came out in the last week or so. The RX-V6A is normally $600 and RX-V4A is normally $440, so getting essentially an RX-V6A for $400 seems good.
This receiver has 7.2 channels, 7 HDMI in (some of which will handle 4k/120 and 8k/60 resolutions after future firmware upgrade), Atmos, Dolby Vision, etc.
TSR-700 specs:
https://usa.yamaha.com/products/a…oduct-tabs
RX-V6A specs:
https://usa.yamaha.com/products/a…oduct-tabs
https://www.costco.com/yamaha-tsr…86465.htm