Many of the rewards are duplicated, but limited, SO PICK THE LOWEST REWARD that is not already sold out.
Summary of the reward levels to make it clear which are unique.
1 Club-> 1 Heart : Greeting cards
2 Diamonds: : Premium greeting cards
2 Hearts -> The setting trick : 1 lithoprint + cards
Support double : 2 lithoprints + cards
Grand slam doubled : 2 lithoprints personalized with the artists support
TYP Champion : The original water color painting.
So as more and more backers join, the best bargains start to disappear. This is a signature of Kickstarter projects, the idea originally coming from the art world.
I wish I had made this clearer in the rewards' description, but it is not possible to improve the text after a project has launched.