Thanks so much to reader @groovesalada on Instagram for the tip about his one!
Illamasqua is having a huge sale HERE with up to 70% off select items. Nail polishes for 70% off ($6 down from $18), Matte Liquid Lipsticks and Powder Blushes for $11 (down from $26-$28), and much more.
UPDATE: It appears that shipping to the US is $15 if you're spending under $75 on makeup. If you're ordering more than $75 on makeup, then shipping is free. If you are only ordering nail polish, you will be charged $15 for shipping unless your order is $100+, in which case it's free (I'm guessing this has to do with special fees added for "hazardous" materials). Thanks to reader Laura below for helping me figure that one out!
Thanks again, @groovesalada, for the heads-up about this one!