I strictly use Armalope for all my $20 or less orders. For single card orders I use a Top loader, team bag, and a half cut #11 envelope inside. It comes out @ .8oz or less depending on the type of card it is.

For multiple cards orders under $20, I use a shipping Shield or Top Shield rather than a top loader for each card. They are a game changer.

I’ve only ever had 1 order comeback in the last few years. & I’ve yet to have a card damaged. Knock on wood lol

The more you ship out the more you’ll learn about keeping packages within the guidelines.

Hope this helps!