The medium-size smart home speaker with award winning design - Harman Kardon Citation 300 Smart Home Speaker (100 Watt total output) - with Chromecast built-in for $150 ($300 off) after coupon code - ZDNET300. 2 colors. I think it's a good price.
Final price - 150 plus tax, free shipping.
Bonus - Comes with 3 months of free YouTube Music (ad-free)