For different types of buyers, quotation logic should be designed separately, not with the same price list for everyone. Retail merchants care about low trial risk and sufficient profit margins, so tax-and-shipping-included small-batch express delivery options are very attractive to them. Large distributors or agents, on the other hand, care about exclusive terms, pricing flexibility based on long-term partnerships, and supply stability. By separating these two tiers, large distributors won't feel the conditions are the same as small retailers, and small retailers won't give up trying because the MOQ threshold is too high. In practice, you can set different price tiers and trading conditions for different buyers, and when issuing quotations, directly apply that customer's conditions without recalculating or manually adjusting each time.