noun, noun or participle which takes 'suru'
trial purchase; buying on trial
Refers to buying a small amount of a product to test it before committing to a larger purchase. Often used in the context of online shopping or new products.
新発売のコーヒーを試し買いしてみた。
I bought the newly released coffee on a trial basis.
試し買いセットが人気です。
Trial purchase sets are popular.