Thumb Score: +16

Woot! [woot.com] has HOIN 120″ 4K Outdoor/Indoor Projector Screen for $39.99 – extra 20% off with code SUPERSAVING (Offer expires 11:58pm CT, or while supplies last) = $31.99.
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.