Products being what they are, you will find them packaged many different ways and put on shelves for resale in many places.
The whole theme of this Forum is to save money so I really do not want to buy my electrolyte at inflated prices from a shelf in a store - buy direct and get it at around 50% to 75% off.
In Australia there is a web site that has Potassium Hydroxide available at $7.50 per kilo, and Sodium Hydroxide available at $5.50 per kilo. The web site is at
https://www.escentialsofaustralia.com/php/product_listing.php?gid=49 If anyone reading this has other supply sources please list them in this posting for the benefit of our Forum visitors.