The base price of powder per 500 grams is 43.20 USD. Up to the quantity of 8 kg, we calculate double the quantity at a price times 1.6. For quantities above 8 kg, double the quantity cost 1.8 times the price. Thus, the levels at which discounts become effective are: 1 kg, 2 kg, 4 kg, 8 kg, 16 kg, 32 kg, and so on.

1 kg - 43.20 x 1.6 = 69.12 USD

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2 kg - 69.12 x 1.6 = 110.59 USD

110.59 USD / 2 = 55.30 per kg

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4 kg - 110.59 x 1.6 = 176.94 USD

176.94 USD / 4 = 44.24 per kg

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8 kg - 176.94 x 1.6 = 283.10 USD

283.10 USD / 8 = 35.39 per kg

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16 kg - 283.10 x 1.8 = 509.58 USD

509.58 USD / 16 = 31.84 per kg

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32 kg - 509.58 x 1.8 = 917.24 USD

917.24 USD / 32 = 28.66 per kg

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64 kg - 917.24 x 1.8 = 1651.04 USD

1651.04 USD / 64 = 25.80 per kg

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128 kg - 1651 x 1.8 = 2971.81 USD

2971.81 USD / 128 = 23.22 per kg

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256 kg - 2971.80 x 1.8 = 5349.25 USD

5349.25 USD / 256 = 20.89 per kg

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512 kg - 5349.25 x 1.8 = 9628.65 USD

9628.65 USD / 512 = 18.80 per kg

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1024 kg - 9628.65 x 1.8 = 17,331.57 USD

17331.57 USD / 1024 = 16.93 per kg

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2048 kg - 17,331.57 x 1.8 = 31,196.83 USD

31196.83 USD / 2048 = 15.23 per kg

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4096 kg (one 20-foot container) - 31,196.83 x 1.8 = 56,154.29 USD

56,154.29 USD / 4096 = 13.70 per kg