If you are looking to make some extra cash and sell these, which I'm always cool with btw, the cost to make these is next to nothing. You can purchase crochet cotton thread for very reasonable costs, and reuse buttons you've collected, found at second hand stores, or even for cheap at many big box stores.
This is not the only crocheted jewelry pattern I've written. If you are looking for more crochet or knitting patterns, be sure to check out my website KweenBee.com or wherever you originally downloaded this pattern.
There is also an ad supported version available to read online at KweenBee.com.