Price is not negotiable. The photos show the front and back. The front shows larger particles, while the back inevitably has smaller ones at the bottom. They range from 1mm to 5mm. Due to hygiene concerns, I do not sell in smaller portions. Shipping will be handled as received. Regarding the product, all somatid products are handled as miscellaneous goods, so please use them at your own discretion. I personally put it in water and drink it. I will also share my personal usage method after purchase. I spent over an hour writing this, as I want you to understand it well. For those who wish, I can portion it into 100g or 200g for easier use. If you would like to purchase in smaller portions, please read the above and understand before proceeding. Sand Somatid 100g: 3300 yen Sand Somatid 200g: 6300 yen Sand Somatid 1kg: 30000 yen Thank you for your understanding. I also have smaller portions listed, please check my listings. If you want 1kg, you can purchase it directly. Sales will end when stock runs out.