Thumb Score: +25

Woot! [woot.com] has BLACK+DECKER BPACT12WT 12,000 BTU Portable AC for $179.99.
Shipping is free for Amazon Prime Members (must login with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.

Price:
$405.01 lower (69% savings) than the reference price of $585