There are many short down jackets on Taobao that cost from 100 to 200 yuan, which are called black gold. Down jackets in this price range may be caused by the following reasons:

1. They may use low-quality fillers and fabrics, so the price is relatively low. Inferior fillers and fabrics may not keep warm well, and it is easy to leak or get off the line.

These down jackets may have been out-of-season products in the past, and they will be sold at a reduced price after the season. The backlog of out-of-season products needs to be cleared as soon as possible, so they will be sold online at low prices.

3. Some low-priced down jackets may be imitations or cottage brands, and they have not passed the quality inspection, which has certain risks.

The reason why some down jackets are low in price may be that they are popular styles and have a large sales volume, so the prices can be kept relatively low.

Please note that the above are only possible explanations. Please compare different products and their prices carefully before making a decision.