FLIRC passive cooling cases for raspberry pi seem to be back on sale similar to the previous deal in feb.
Other cases on sale
Pi 4: Kodi Edition $21.50
Pi Zero $17.50
About this item
The best looking Raspberry Pi case made out of beautiful aluminum
All New Manufacturing Process with improved metal quality and design
Made for the new Raspberry Pi 4
GPIO and all the main connectors are easily accessible through the bottom
Built in Heat Sink and comes with a thermal pad and 4 screws
$10 cheaper than elsewhere, time to get a nice case for the PI4.