https://www.accessories4less.com/make-a-store/category/avreceiver/home-audio/receivers-amps/home-theater-receivers/1.html
I purchased my Denon Receiver from them several years ago and had no issues. They are an official denon outlet along with other brands. Highly recommended by AV Rant podcast without sponsorship.
Several entry level receivers there for around $200.
I know some Denon's can be controlled via a smartphone if they are on your home network but I would recommend looking into a logitech harmony hub as you could hide all the electronics inside and the hub would address everything via your phone or a remote (I use this to hide my home theater in a closet).
Hope this helps some.