Thumb Score: +15

Amazon [amazon.com] has 2-Pack 1-Quart Rust-Oleum Oil-Based Protective Enamel Paint (Satin Black) for $17.47.
Shipping is free with Prime or on $35+ orders.

And at Home Depot [homedepot.com]

Price
$22.51 lower (56% savings) than the list price of $39.98