It's ideal to select 2-3 different designs and sellers to test out. This diversity helps you explore different styles and gather valuable insights.
When trying out Etsy products, it's recommended to order maybe two to three different designs. This is to give you a variety of options to analyze and choose from.
However, you should only order one unit per design at this stage, not all 20 units. This is because you're still in the testing phase and you want to minimize risk.
It's recommended to choose sellers with 50+ 5-star reviews for reliable and high-quality products. You can choose from sellers that have high reviews and good reviews. Remember, the goal is to find items that are not on Amazon and differentiate them.