I sell footy stuff (and other stuff) directly here and through Redbubble, a print-on demand site.
Tigers Together bumper stickers
The black sticker came out in 2017, to celebrate Richmond's 22 players who won three finals to break the premiership drought. Now there's a yellow sticker to celebrate the story of the 2019 season and another premiership. These are printed here in Hobart, and when you order them, I put them in an envelope myself! They are $5.50 each with free postage and you can pay by Paypal or Direct Deposit.
Buy bumper stickers
FAQ: Do Redbubble sell stickers too?
Yes they do, three sizes. It's confusing I know.
Tigers Together shirts, mugs, prints, leggings, you name it
I use online print-on-demand service Redbubble to sell these two designs (and a heap of others) printed on a wide range of items. Too many items IMO. They're printed (sometime in the USA) and posted to you direct, and Redbubble pay me a margin on each one. It's a great service for you, they look after their customers so well. Snd its great for me because I can sell what you want in your size and not have to keep a massive warehouse. This link takes you to the Tigers Together collection but there is more Richmond stuff, more footy stuff, and just more stuff.
E-Commerce: Stickers Ahoy