Albeebaby.com has the Diono Rainier 2 AXT car seat on sale for 199.99 + free shipping in several colors.
This is the lowest I’ve seen for this newer model. We already had a Radian RXT and just picked up a couple Rainiers for our girls.
Grey Oyster 199.99
Blue 199.99
Red 199.99
Plum 199.99
Dark Grey 249.99