Ideas on how to create a small "sales corner"?
As I mentioned I tested it on Tiki19 and it was ok. (see the video)
I believe it should be ok in 20 and 21 too.
What is missing at the moment is a "shop display", a Wiki page showing all products.
Then the right direction would be a plugin List pointing to your products tracker (with a buy button pointing to the itemId of each one). ?