Superworld Comics is 10% off everything on the website, plus free domestic shipping in their Thanksgiving weekend sale. The sale runs from Wednesday, November 29 through Monday, December 2, 2019.
Some of the books featured on their site are Amazing Spider-Man #13 F- (first Mysterio), Batman #171 VF/NM, Out of the Shadows #11 F/VF, Prize Comics #11 CGC 8.0, Sensation Comics #13 F/VF, Silver Surfer #1 VF+, Strange Suspense Stories #19 VG, Tales of Suspense #39 VG- (first Iron Man), and Thunda #1 F.