Is it possible to pay some pricier shipping to buy from the US amazon site? I bought a pound of non-food grade powdered Methyl Cellulose for 16 bucks ages ago and have hardly made a dent in it. I mix a tablespoon at a time with a cup of water using an immersion blender until it's the right thickness. Even with extra shipping it may be worth it vs. paying those exorbitant prices.
Here's the one I bought:
https://www.amazon.com/Methyl-Cellulose-Non-FDA-1-lb/dp/B001QQ7LOA