Newegg.com has ASRock AB350 Pro4 AM4 AMD ATX Motherboard for $74.99 - $20 Rebate = $54.99. Shipping is free with ShopRunner or with Newegg Premier, otherwise it is $0.99.
ASRock should go out of business cause their customer service people are donkeybutts (Saw Kaos Kid was back so I didn't want to swear in front of the Kids )