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+++ b/Appendix-B:-3D-printed-parts.md
@@ -1,6 +1,6 @@
 
 # Buying 3D-printed parts from us
-Not everyone has access to a 3D-printer. [That's why we sell kits with everything you need to build a Ploopy Mini Trackball](https://www.ploopy.co/product/trackball-full-kit-preorder/4) **TODO fix this link**. Here's why that's great for you:
+Not everyone has access to a 3D-printer. [That's why we sell kits with everything you need to build a Ploopy Mini Trackball](https://www.ploopy.co/shop/mini-trackball-category/6?page=1&limit=60&sort_by=popularity_score&sort_order=desc). Here's why that's great for you:
 
 - You get all of the 3D-printed parts, guaranteed free of manufacturing defects
 - You won't waste time spending hours tweaking settings