I am wondering if it is possible to build a store where I can select quantity by weight and add to cart without leaving the filtered page. I would be selling in bulk but the values can be set. Below is an example of exactly what I want to be able to do. Here is the website if you want to see: https://www.davidstea.com/us_en/tea/loose-leaf-tea/green/?sz=48&start=0
Tracking inventory and the weight in regards to delivery doesn't matter to me. I found someone recommending the Buy the measurement App but it has a monthly fee. Also, I haven't seen an example of this drop-down menu.
I hope someone can guide me on what to search to make this possible. I would be very grateful. Thanks community!