Price is not negotiable. The photos show the front and back. The front shows larger particles, while the back inevitably shows smaller ones at the bottom. They range from 1mm to 5mm. Regarding the product: All somatid products are handled as miscellaneous goods. Please use them at your own discretion. I personally put them in water and drink it. I will share my personal usage method after purchase. I spent over an hour writing this, as I want you to understand the product well. If you understand everything and are okay with it, you can buy it immediately. I also have 100g and 1kg sizes available, please check my other listings. Sales will end when stock runs out.