I'm happy to ship these standard letter ($2 in Australia?) but you'd have to accept the fact that it doesn't come with tracking.
Batman: Saga of the Dark Knight B1 (marred) and B3 (Iconic Dave Dorman image) - $5
The Creators Universe All American chase set SD1-SD4 - $5 for set
The Creators Universe Checklist cards CL3 & CL4 - $5 each
Cyber 1110 - Iron Man 2020 Convention Exclusive - $2 x2
Wanted By The FBI (Federal 1993) SP1 - Die-Cut Target - $10 x15
Fleer Ultra Avengers 2022 #1 Agent 13 Orange Foil 132/549 $5
Fleer Ultra Avengers 2022 Earth’s Mightiest Spin-Offs - SO-1 New Avengers - $5
Fleer Ultra Spider-Man 2017 Century EX - Alistair Smythe (EX33) and Cloak (EX36) - $5 each
Iron Man 2 Armored Cards AC1-AC3 - $5 for lot
Iron Man 3 Jumbo Retail Pack exclusive stickers IM#-30 & -35 - $2 each
Kingdom Come Xtra Classics #1 - $8
Marvel Annual Top 10 Fights TF-6 - Iron Man vs Vision - $1
Marvel Annual 2017 Top 10 Heroes TH-5 - Iron Man Tony Stark - $2
Marvel Annual 2018-2019 Rookie Heroes RH3 - Iron Hulk - $2
The Maxx #1 & #6 Spectra-Etch - $2
Transformers Movie Flix-Pix #3 (Bumblebee, chipped edge), #4 (Barricade) & #5 (Ratchet) - $6 each
Spider-Man Filmcardz PH1 - $2
Star Trek Insurrections Schematic card S-1 (USS Enterprise-E) - $1
Superman Skydisc Redemption Card (Skybox 1994) - $10
Ultraverse Warstrike Flash hologram H2 - $5
Wildstorm Set 1 Chromium chase C1 (WildC.A.T.s) - $3
(The World of) US Manga Corps chromium chase C2 (Genocyber) - $3
The Young Indiana Jones Chronicles (Pro-Set) 3-D glasses card - $1
Akira 10-card Preview set missing prism card - $10
Best Defense promos - 2 of 4 (M1A1 Abrams) x4, 3 of 4 (RAH-66 Comanche) x 4, 4 of 4 (B-2 Spirit) x4 - $1.50
Comics Greatest World Topps - $3
Kotobukiya Marvel ArtFX Premier promo SDCC 2019 exclusive - $5
Wizard promo - Predator vs Magnus Robot Fighter #3 & #4 - $4
Wizard Series I prism border promos - #6 (Cyber Force), #7 (WildC.A.T.s) & #8 (Wetworks) - $3
Wizard Series II chromium promo #11 - Iron Man die-cut - $3
Wizard Series III chromium promo #5 - Ripclaw - $2
Wizard X-Men Turn Thirty silver foil - $4
Hands of the Mandarin comic event promo - $3
Varga Prototype Dec 1945 - $2
George Petty Prototype - $2
The Petty Girl Prototype - $2
Gil Elvgren Prototype - $2
Archer (Cryptozoic 2014) base x2 - $20
Archer Whore Island WHR-03 & 09, Inappropriate Workplace Moments C2 & C9, ISIS Just The Tips ISIS-2, -3, -5 & -9 - $5-$20 each
Kick-Ass base - $20
Kick Ass B&W Bloody 1 & 2, Behind the Scenes 1 & 9, Chrome Puzzle Photo #3, Chrome Puzzle Art #4 - $2.50
Tribe base w/ Promo, Prisms and Thermofoils T1 & T5 - $10
Masters of Japanimation base x2 - $5
Robot Carnival base x2 - $5
Monty Python’s Flying Circus and Archer singles
Marvel Impel 1992 #62 - Iron Man
DC vs Marvel 1995 #68 - Warrior vs War Machine
Kayou Marvel Hero Battle photo Pepper Potts R - MW01-101
Kayou Marvel Hero Battle Iron Man SR - MW03-033 - $2
Kayou Marvel Hero Battle Groot R - MW02-081 x2
Uno Ultimate Marvel #1 - Iron Man Reactor Burn x2 - $2
Marvel Anime 2020 #39 - Iron Lad silver foil
Marvel Annual 2017 #102 - Iron Man silver foil
Captain America Civil War #58 - blue foil variant - $3
Avengers Age of Ultron #33 & #40 - silver foil variant - $3
Avengers Endgame #47 - purple acetate - $2
Avengers Infinity War #17A - orange acetate - $2
Marvel Greatest Battles #04 - Iron Man vs Captain America